favor return over return _ (void return); newline/closing terminates

examples/programs/yield/main.bro

@@ -266,6 +266,19 @@ stmt_block_escape func() i32 {
 	return hits # 4 + 1000 (defer) = 1004
 }
 
+# A labeled block can also be exited through an ordinary nested block.
+stmt_block_nested func() i32 {
+	hits i32 = 0
+	outer: {
+		{
+			hits = 1
+			break :outer
+		}
+		hits = 100 # skipped by break :outer
+	}
+	return hits
+}
+
 # Item B: a `none` yielded before a concrete `yield :blk` that references a block local.
 lblock_local func() i32 {
 	r :: blk: {
@@ -319,6 +332,7 @@ main func() i32 {
 	if (stmt_block(0) != 2) return 132
 	if (stmt_block_escape() != 1004) return 133
 	if (lblock_local() != 9) return 134
+	if (stmt_block_nested() != 1) return 135
 
 	return 42
 }