Remove early error abort

Author: varkor

src/librustc_driver/driver.rs

@@ -1211,7 +1211,6 @@ where
         .set(derive_registrar::find(&hir_map));
 
     time(sess, "loop checking", || loops::check_crate(sess, &hir_map));
-    sess.abort_if_errors();
 
     let mut local_providers = ty::query::Providers::default();
     default_provide(&mut local_providers);

src/test/ui/issue-51714.rs

@@ -20,4 +20,5 @@ fn main() {
 
     [(); return while let Some(n) = Some(0) {}];
     //~^ ERROR return statement outside of function body
+    //~^^ ERROR irrefutable while-let pattern
 }

src/test/ui/issue-51714.stderr

@@ -22,6 +22,13 @@ error[E0572]: return statement outside of function body
 LL |     [(); return while let Some(n) = Some(0) {}];
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 4 previous errors
+error[E0165]: irrefutable while-let pattern
+  --> $DIR/issue-51714.rs:21:27
+   |
+LL |     [(); return while let Some(n) = Some(0) {}];
+   |                           ^^^^^^^ irrefutable pattern
+
+error: aborting due to 5 previous errors
 
-For more information about this error, try `rustc --explain E0572`.
+Some errors occurred: E0165, E0572.
+For more information about an error, try `rustc --explain E0165`.