libstdc++: Fix non-ASCII characters in <contracts> header

This fixes:
FAIL: 17_intro/headers/c++1998/charset.cc  -std=gnu++26 (test for excess errors)

libstdc++-v3/ChangeLog:

	* include/std/contracts: Replace non-ASCII characters.

diff --git a/libstdc++-v3/include/std/contracts b/libstdc++-v3/include/std/contracts
index 2cf67ac1dd8802d2cec9bbe1aa79f81564648cc6..0fd9b10247eac38b98feb054d78348ad8a72a617 100644 (file)
--- a/libstdc++-v3/include/std/contracts
+++ b/libstdc++-v3/include/std/contracts
@@ -52,7 +52,7 @@ namespace contracts
     post = 2,
     assert = 3,
 
-    /* Implementation−defined values should have a minimum value of 1000. */
+    /* Implementation-defined values should have a minimum value of 1000. */
   };
 
   enum class evaluation_semantic : __UINT16_TYPE__ {
@@ -61,14 +61,14 @@ namespace contracts
     enforce = 3,
     quick_enforce = 4,
 
-    /* Implementation−defined values should have a minimum value of 1000.  */
+    /* Implementation-defined values should have a minimum value of 1000.  */
   };
 
   enum class detection_mode : __UINT16_TYPE__ {
     predicate_false = 1,
     evaluation_exception = 2,
 
-    /* Implementation−defined values should have a minimum value of 1000. */
+    /* Implementation-defined values should have a minimum value of 1000. */
   };
 
   using __vendor_ext = void;