[all] fix numerous memory leaks at application shutdown

client/displayservers/X11/x11.c

@@ -261,6 +261,7 @@ static bool x11GetProp(LG_DSProperty prop, void *ret)
       maxSamples = samples;
   }
 
+  XFree(visuals);
   XCloseDisplay(dpy);
 
   *(int*)ret = maxSamples;

client/fonts/SDL/src/sdl.c

@@ -36,19 +36,21 @@ struct Inst
 
 static bool lgf_sdl_create(LG_FontObj * opaque, const char * font_name, unsigned int size)
 {
-  if (g_initCount++ == 0)
+  bool ret = false;
+
+  if (g_initCount == 0)
   {
     if (TTF_Init() < 0)
     {
       DEBUG_ERROR("TTF_Init Failed");
-      return false;
+      goto fail;
     }
 
     g_fontConfig = FcInitLoadConfigAndFonts();
     if (!g_fontConfig)
     {
       DEBUG_ERROR("FcInitLoadConfigAndFonts Failed");
-      return false;
+      goto fail_init;
     }
   }
 
@@ -56,51 +58,96 @@ static bool lgf_sdl_create(LG_FontObj * opaque, const char * font_name, unsigned
   if (!*opaque)
   {
     DEBUG_INFO("Failed to allocate %lu bytes", sizeof(struct Inst));
-    return false;
+    goto fail_config;
   }
-  memset(*opaque, 0, sizeof(struct Inst));
 
+  memset(*opaque, 0, sizeof(struct Inst));
   struct Inst * this = (struct Inst *)*opaque;
 
   if (!font_name)
     font_name = "FreeMono";
 
   FcPattern * pat = FcNameParse((const FcChar8*)font_name);
+  if (!pat)
+  {
+    DEBUG_ERROR("FCNameParse failed");
+    goto fail_opaque;
+  }
+
   FcConfigSubstitute(g_fontConfig, pat, FcMatchPattern);
   FcDefaultSubstitute(pat);
   FcResult result;
   FcChar8 * file = NULL;
-  FcPattern * font = FcFontMatch(g_fontConfig, pat, &result);
+  FcPattern * match = FcFontMatch(g_fontConfig, pat, &result);
 
-  if (font && (FcPatternGetString(font, FC_FILE, 0, &file) == FcResultMatch))
+  if (!match)
+  {
+    DEBUG_ERROR("FcFontMatch Failed");
+    goto fail_parse;
+  }
+
+  if (FcPatternGetString(match, FC_FILE, 0, &file) == FcResultMatch)
   {
     this->font = TTF_OpenFont((char *)file, size);
     if (!this->font)
     {
       DEBUG_ERROR("TTL_OpenFont Failed");
-      return false;
+      goto fail_match;
     }
   }
   else
   {
     DEBUG_ERROR("Failed to locate the requested font: %s", font_name);
-    return false;
+    goto fail_match;
   }
+
+  ++g_initCount;
+  ret = true;
+
+fail_match:
+  FcPatternDestroy(match);
+
+fail_parse:
   FcPatternDestroy(pat);
 
+  if (ret)
     return true;
+
+fail_opaque:
+  free(this);
+  *opaque = NULL;
+
+fail_config:
+  if (g_initCount == 0)
+  {
+    FcConfigDestroy(g_fontConfig);
+    g_fontConfig = NULL;
+  }
+
+fail_init:
+  if (g_initCount == 0)
+    TTF_Quit();
+
+fail:
+  return false;
 }
 
 static void lgf_sdl_destroy(LG_FontObj opaque)
 {
   struct Inst * this = (struct Inst *)opaque;
+
   if (this->font)
     TTF_CloseFont(this->font);
   free(this);
 
   if (--g_initCount == 0)
+  {
+    FcConfigDestroy(g_fontConfig);
+    g_fontConfig = NULL;
+
     TTF_Quit();
   }
+}
 
 static LG_FontBitmap * lgf_sdl_render(LG_FontObj opaque, unsigned int fg_color, const char * text)
 {

client/renderers/EGL/egl.c

@@ -242,6 +242,16 @@ void egl_deinitialize(void * opaque)
 
   LG_LOCK_FREE(this->lock);
 
+  eglMakeCurrent(this->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+
+  if (this->frameContext)
+    eglDestroyContext(this->display, this->frameContext);
+
+  if (this->context)
+    eglDestroyContext(this->display, this->context);
+
+  eglTerminate(this->display);
+
   free(this);
 }
 

client/renderers/EGL/splash.c

@@ -154,8 +154,12 @@ void egl_splash_free(EGL_Splash ** splash)
   if (!*splash)
     return;
 
+  egl_model_free(&(*splash)->bg  );
   egl_model_free(&(*splash)->logo);
 
+  egl_shader_free(&(*splash)->bgShader  );
+  egl_shader_free(&(*splash)->logoShader);
+
   free(*splash);
   *splash = NULL;
 }

common/src/option.c

@@ -223,6 +223,12 @@ void option_free(void)
   state.options = NULL;
   state.oCount  = 0;
 
+  for(int g = 0; g < state.gCount; ++g)
+  {
+    struct OptionGroup * group = &state.groups[g];
+    if (group->options)
+      free(group->options);
+  }
   free(state.groups);
   state.groups  = NULL;
   state.gCount  = 0;