parser: minor cleanup of stmt() (#7573)

vlib/v/parser/parser.v

@@ -679,20 +679,26 @@ pub fn (mut p Parser) stmt(is_top_level bool) ast.Stmt {
 			return p.return_stmt()
 		}
 		.dollar {
-			if p.peek_tok.kind == .key_if {
+			match p.peek_tok.kind {
+				.key_if {
 					return ast.ExprStmt{
 						expr: p.if_expr(true)
 					}
-			} else if p.peek_tok.kind == .key_for {
+				}
+				.key_for {
 					return p.comp_for()
-			} else if p.peek_tok.kind == .name {
+				}
+				.name {
 					return ast.ExprStmt{
 						expr: p.vweb()
 					}
 				}
+				else {
 					p.error_with_pos('unexpected \$', p.tok.position())
 					return ast.Stmt{}
 				}
+			}
+		}
 		.key_continue, .key_break {
 			tok := p.tok
 			line := p.tok.line_nr