Avoid divide by 0 in core_custom_frame_control example

examples/core/core_custom_frame_control.c

@@ -95,7 +95,10 @@ int main(void)
             DrawText("PRESS SPACE to PAUSE MOVEMENT", 10, GetScreenHeight() - 60, 20, GRAY);
             DrawText("PRESS UP | DOWN to CHANGE TARGET FPS", 10, GetScreenHeight() - 30, 20, GRAY);
             DrawText(TextFormat("TARGET FPS: %i", targetFPS), GetScreenWidth() - 220, 10, 20, LIME);
-            DrawText(TextFormat("CURRENT FPS: %i", (int)(1.0f/deltaTime)), GetScreenWidth() - 220, 40, 20, GREEN);
+            if (deltaTime != 0)
+            {
+                DrawText(TextFormat("CURRENT FPS: %i", (int)(1.0f/deltaTime)), GetScreenWidth() - 220, 40, 20, GREEN);
+            }
 
         EndDrawing();