tests: cover macro calls following one with invalid syntax

Author: shulaoda

tests/source/macros.rs

@@ -484,3 +484,10 @@ f!(match a {
 
 // #3583
 foo!(|x = y|);
+
+// #3757
+f!(match a {
+    _ => (  ),
+});
+
+g!( 1, 2, 3 );

tests/target/macros.rs

@@ -1056,3 +1056,10 @@ f!(match a {
 
 // #3583
 foo!(|x = y|);
+
+// #3757
+f!(match a {
+    _ => (),
+});
+
+g!(1, 2, 3);