Un-break for compilers that don't yet support stringstream copying ala C++0x's MoveConstructible

indra/llrender/llshadermgr.cpp

@@ -764,6 +764,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 				dumpObjectLog(ret);
 				error_str = get_object_log(ret);
 
+#if LL_WINDOWS
 				std::stringstream ostr;
 				//dump shader source for debugging
 				for (GLuint i = 0; i < count; i++)
@@ -780,6 +781,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 				}
 
 				LL_WARNS("ShaderLoading") << "\n" << ostr.str() << llendl;
+#endif // LL_WINDOWS
 				glDeleteObjectARB(ret); //no longer need handle
 				ret = 0;
 			}