input.c: fix the comment for test_make_location_nonpure_range_endpoints

gcc/ChangeLog:
	* input.c
	(selftest::test_make_location_nonpure_range_endpoints): Fix
	header comment.

From-SVN: r239844

gcc/ChangeLog

 2016-08-29  David Malcolm  <dmalcolm@redhat.com>
 
+	* input.c
+	(selftest::test_make_location_nonpure_range_endpoints): Fix
+	header comment.
+
+2016-08-29  David Malcolm  <dmalcolm@redhat.com>
+
 	* diagnostic-show-locus.c
 	(selftest::test_one_liner_fixit_validation_adhoc_locations): New
 	function.

gcc/input.c

@@ -1720,8 +1720,8 @@ test_builtins ()
 }
 
 /* Regression test for make_location.
-   Ensure that we use the caret locations of the start/finish, rather
-   than storing a packed or ad-hoc range as the start/finish.  */
+   Ensure that we use pure locations for the start/finish of the range,
+   rather than storing a packed or ad-hoc range as the start/finish.  */
 
 static void
 test_make_location_nonpure_range_endpoints (const line_table_case &case_)