[gcc r15-1222] c++: fix testcase diagnostics

[Jason Merrill]

https://gcc.gnu.org/g:7bf072e87a03c9eaff9b7a1ac182537b70f0ba8e

commit r15-1222-g7bf072e87a03c9eaff9b7a1ac182537b70f0ba8e
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Jun 12 14:14:16 2024 -0400

    c++: fix testcase diagnostics
    
    The r15-1180 adjustments to this testcase broke a couple of tests in C++26
    mode.
    
    gcc/testsuite/ChangeLog:
    
            * g++.dg/cpp26/static_assert1.C: Fix diagnostic typos.

Diff:
---
 gcc/testsuite/g++.dg/cpp26/static_assert1.C | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/g++.dg/cpp26/static_assert1.C b/gcc/testsuite/g++.dg/cpp26/static_assert1.C
index 7840b6b04d27..f9ac8311b827 100644
--- a/gcc/testsuite/g++.dg/cpp26/static_assert1.C
+++ b/gcc/testsuite/g++.dg/cpp26/static_assert1.C
@@ -286,14 +286,14 @@ namespace NN
   };
   static_assert (true, M{});		// { dg-warning "'static_assert' with non-string message only available with" "" { target c++23_only } }
   static_assert (false, M{});		// { dg-warning "'static_assert' with non-string message only available with" "" { target c++23_only } }
-					// { dg-error "'constexpr string 'size\\\(\\\)' must be a constant expression" "" { target c++23 } .-1 }
+					// { dg-error "constexpr string 'size\\\(\\\)' must be a constant expression" "" { target c++23 } .-1 }
   struct N {
     static constexpr int size () { return 4; }
     static constexpr const char *data () { if consteval { throw 1; } else { return "test"; } } // { dg-error "expression '<throw-expression>' is not a constant expression" "" { target c++23 } }
   };
   static_assert (true, N{});		// { dg-warning "'static_assert' with non-string message only available with" "" { target c++23_only } }
   static_assert (false, N{});		// { dg-warning "'static_assert' with non-string message only available with" "" { target c++23_only } }
-					// { dg-error "'constexpr string 'data\\\(\\\)\\\[0\\\]' must be a constant expression" "" { target c++23 } .-1 }
+					// { dg-error "constexpr string 'data\\\(\\\)\\\[0\\\]' must be a constant expression" "" { target c++23 } .-1 }
 #endif
   struct O { constexpr int operator () () const { return 12; } };
   struct P { constexpr const char *operator () () const { return "another test"; } };