Fix gcc.dg/utf16-4.c

2017-06-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    * gcc.dg/utf16-4.c: Accept "long unsigned int" as well as
    "unsigned int" in conversation warning on line 15.

From-SVN: r248914

gcc/testsuite/ChangeLog

+2017-06-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	* gcc.dg/utf16-4.c: Accept "long unsigned int" as well as
+	"unsigned int" in conversation warning on line 15.
+
 2017-06-06  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/80928

gcc/testsuite/gcc.dg/utf16-4.c

@@ -12,7 +12,7 @@ char16_t	c2 = u'\U00064321';	/* { dg-warning "constant too long" } */
 char16_t	c3 = 'a';
 char16_t	c4 = U'a';
 char16_t	c5 = U'\u2029';
-char16_t	c6 = U'\U00064321';	/* { dg-warning "conversion from .unsigned int. to .char16_t {aka short unsigned int}. changes value from .410401. to .17185." } */
+char16_t	c6 = U'\U00064321';	/* { dg-warning "conversion from .(long )?unsigned int. to .char16_t {aka short unsigned int}. changes value from .410401. to .17185." } */
 char16_t	c7 = L'a';
 char16_t	c8 = L'\u2029';
 char16_t 	c9 = L'\U00064321';	/* { dg-warning "conversion" "" { target { 4byte_wchar_t } } } */