rwengine: some variables are only used in debug builds

Fixes clang warnings about unused private fields: -Wunused-private-field

rwengine/src/data/ModelData.hpp

@@ -273,7 +273,7 @@ private:
     std::array<AtomicPtr, 3> atomics_;
     float loddistances_[3] = {};
     uint8_t numatomics_ = 0;
-    uint8_t alpha_ = 0;  /// @todo ask aap why
+//    uint8_t alpha_ = 0;  /// @todo ask aap why
     bool isbigbuilding_ = 0;
     uint8_t furthest_ = 0;
 

rwengine/src/render/OpenGLRenderer.hpp

@@ -403,7 +403,7 @@ private:
     template <class T>
     void uploadUBO(Buffer& buffer, const T& data) {
         uploadUBOEntry(buffer, &data, sizeof(T));
-#ifdef RW_PROFILER
+#ifdef RW_GRAPHICS_STATS
         if (currentDebugDepth > 0) {
             profileInfo[currentDebugDepth - 1].uploads++;
         }
@@ -425,7 +425,9 @@ private:
     // Debug group profiling timers
     ProfileInfo profileInfo[MAX_DEBUG_DEPTH];
     GLuint debugQuery;
+#ifdef RW_GRAPHICS_STATS
     int currentDebugDepth = 0;
+#endif
 };
 
 /// @todo remove these from here