Web: Optional error management and error tightening.

Saves about 6.5K

glslang/MachineIndependent/ParseContextBase.cpp

@@ -67,6 +67,8 @@ void TParseContextBase::outputMessage(const TSourceLoc& loc, const char* szReaso
     }
 }
 
+#if !defined(GLSLANG_WEB) || defined(GLSLANG_WEB_DEVEL)
+
 void C_DECL TParseContextBase::error(const TSourceLoc& loc, const char* szReason, const char* szToken,
                                      const char* szExtraInfoFormat, ...)
 {
@@ -113,6 +115,8 @@ void C_DECL TParseContextBase::ppWarn(const TSourceLoc& loc, const char* szReaso
     va_end(args);
 }
 
+#endif
+
 //
 // Both test and if necessary, spit out an error, to see if the node is really
 // an l-value that can be operated on this way.