Fix newline handling

parser.y

@@ -113,7 +113,7 @@ newlines
     ;
 
 stmt
-    : expr newlines { $$ = concatenate($1, ";"); }
+    : expr NEWLINE newlines { $$ = concatenate($1, ";"); }
     | if newlines { $$ = $1; }
     | while newlines { $$ = $1; }
     | BREAK newlines { $$ = new std::string("break;"); }