zzogl-pg: Fix a compilation error when not building a Release build.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@4051 96395faa-99c1-11dd-bbfe-3dabce05a288

plugins/zzogl-pg/opengl/ZZoglCreate.cpp

@@ -315,6 +315,7 @@ __forceinline bool LoadShadersFromDat()
 	return true;
 }
 
+#ifdef DEVBUILD
 __forceinline bool LoadShadersFromFX()
 {
 	// test if ps2hw.fx exists
@@ -348,6 +349,7 @@ __forceinline bool LoadShadersFromFX()
 	return true;
 }
 #endif
+#endif
 
 
 // open shader file according to build target