returns must be inside a function

Compiler.c

@@ -277,7 +277,9 @@ static void cFunction() {
 }
 
 static void cReturn() {
-    if(returnIndex >= RETURN_BUFFER) {
+    if(varIndex == 0) {
+        cError("return without a function on line %d", line);
+    } else if(returnIndex >= RETURN_BUFFER) {
         cError("too much returns in function around line %d", line);
     }
     cAddOperation(OP_POP);