Fix bug in requiring braces for new methods.

sourcepawn/compiler/tests/fail-method-requires-brace.sp

@@ -0,0 +1,8 @@
+methodmap Crab {
+	public Crab() return Crab:5;
+};
+
+public main() {
+	new Crab:crab = Crab();
+	return _:crab;
+}

sourcepawn/compiler/tests/fail-method-requires-brace.txt

@@ -0,0 +1 @@
+expected token: "{", but found "return"