update 2 more examples

examples/shaders/shaders_custom_uniform.c

@@ -68,7 +68,7 @@ int main(void)
     int swirlCenterLoc = GetShaderLocation(shader, "center");
 
     // Create a RenderTexture2D to be used for render to texture
-    RenderTexture2D target;
+    RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight);
 
     SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
     //--------------------------------------------------------------------------------------
@@ -80,10 +80,9 @@ int main(void)
 	{
 		screenWidth = GetScreenWidth();
 		screenHeight = GetScreenHeight();
-	}
-        // Create a RenderTexture2D to be used for render to texture
 		UnloadRenderTexture(target);
 		target = LoadRenderTexture(screenWidth, screenHeight);
+	}
 
         // Update
         //----------------------------------------------------------------------------------

examples/shapes/shapes_bouncing_ball.c

@@ -43,6 +43,13 @@ int main(void)
     {
         // Update
         //-----------------------------------------------------
+	if (IsWindowResized())
+	{
+		screenWidth  = GetScreenWidth();
+		screenHeight = GetScreenHeight();
+		ballPosition.x = screenWidth/2.0f;
+		ballPosition.y = screenHeight/2.0f;
+	}
         if (IsKeyPressed(KEY_SPACE)) pause = !pause;
 
         if (!pause)