Speculative GCC warning fix (again)

imgui.cpp

@@ -331,6 +331,9 @@
 #pragma clang diagnostic ignored "-Wglobal-constructors"    // warning : declaration requires a global destructor           // similar to above, not sure what the exact difference it.
 #pragma clang diagnostic ignored "-Wsign-conversion"        // warning : implicit conversion changes signedness             // 
 #endif
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
+#endif
 
 //-------------------------------------------------------------------------
 // STB libraries implementation
@@ -352,10 +355,6 @@ namespace IMGUI_STB_NAMESPACE
 #pragma clang diagnostic ignored "-Wunused-function"
 #pragma clang diagnostic ignored "-Wmissing-prototypes"
 #endif
-#ifdef __GNUC__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-#endif
 
 #define STBRP_ASSERT(x)    IM_ASSERT(x)
 #ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
@@ -380,9 +379,6 @@ namespace IMGUI_STB_NAMESPACE
 #ifdef __clang__
 #pragma clang diagnostic pop
 #endif
-#ifdef __GNUC__
-#pragma GCC diagnostic pop
-#endif
 
 #ifdef IMGUI_STB_NAMESPACE
 } // namespace ImStb