early return for parsing closure and block with interchanged shape (#7618)

crates/nu-parser/src/parser.rs

@@ -4176,7 +4176,7 @@ pub fn parse_closure_expression(
     } else {
         return (
             garbage(span),
-            Some(ParseError::Expected("block".into(), span)),
+            Some(ParseError::Expected("closure".into(), span)),
         );
     }
     if bytes.ends_with(b"}") {
@@ -4248,7 +4248,7 @@ pub fn parse_closure_expression(
                 error = error.or_else(|| {
                     Some(ParseError::Expected(
                         format!(
-                            "{} block parameter{}",
+                            "{} closure parameter{}",
                             v.len(),
                             if v.len() > 1 { "s" } else { "" }
                         ),

src/tests/test_parser.rs

@@ -349,7 +349,10 @@ fn proper_missing_param() -> TestResult {
 
 #[test]
 fn block_arity_check1() -> TestResult {
-    fail_test(r#"ls | each { |x, y, z| 1}"#, "expected 2 block parameters")
+    fail_test(
+        r#"ls | each { |x, y, z| 1}"#,
+        "expected 2 closure parameters",
+    )
 }
 
 #[test]