Fix wrong type in check inside OperatorPrecedence

src/Parser.c

@@ -28,7 +28,7 @@ static int Precedence[] =
 static int OperatorPrecedence(int Token) {
     int Prec = Precedence[Token];
 
-    if(Prec == 0 || Token >= RET_VOID) {
+    if(Prec == 0 || Token >= LI_INT) {
         DieMessage("Attempting to determine operator precedence of an EOF or INT literal", TokenNames[Token]);
     }