gccrs: [E0027] struct pattern fails to specify struct's fields

A pattern for a struct fails to specify a sub-pattern
for every one of the struct's fields. - pattern does
not mention fields `x`, `y`

gcc/rust/ChangeLog:
	* typecheck/rust-hir-type-check-pattern.cc (TypeCheckPattern::visit): called rust_error_at

Signed-off-by: Muhammad Mahad <[email protected]>

Author: MahadMuhammad

gcc/rust/typecheck/rust-hir-type-check-pattern.cc

@@ -268,7 +268,8 @@ TypeCheckPattern::visit (HIR::StructPattern &pattern)
 	  i++;
 	}
 
-      rust_error_at (pattern.get_locus (), "pattern does not mention fields %s",
+      rust_error_at (pattern.get_locus (), ErrorCode ("E0027"),
+		     "pattern does not mention fields %s",
 		     missing_fields_str.c_str ());
     }
 }