Added a reminder in the Parser in the event of bad syntax.

parser.c

@@ -133,9 +133,13 @@ Expr* Primary() {
     if (Match(1, LParen)) {
         expr = Expression();
         
-        Expr* temp = calloc(1, sizeof(Expr));
-        if (!Check(RParen)) printf("Unbalanced\n"); //Todo: something or another...
+        if (!Check(RParen)) {
+            free(expr);
+            printf("Unbalanced\n"); //Todo: something or another...
+            return NULL;
+        }
         //Consume(RParen, "Expect ')' after expression.");
+        Expr* temp = calloc(1, sizeof(Expr));
         temp->type = GROUPING;
         temp->expression.Grouping.expression = expr;
 
@@ -183,7 +187,11 @@ Token* AdvanceParser() {
 
     return Previous();
 }
-
+//In the Java implementation this get's called in catch blocks.
+//Obviously that's not going to fly in C, so I need some way to
+//"unwind" the stack. Maybe synchronizing (setting the Current variable)
+//will be enough, and simply return NULLs up the call stack.
+//Naive but might work in the future for this.
 void SynchronizeParser(void) {
     AdvanceParser();
     //Discard tokens until we find a statement boundary, or at least something that looks like one.