[patch prefix.c]: 4 of 7 Fix of PR target/53912 bootstrap fails using default c++ mode in stage 2 and 3 for native x86_64-w64-mingw32

[Kai Tietz <ktietz70@googlemail.com>]

Hello,

this trivial patch fixes a bootstrap issue on LLP64 hosts.

ChangeLog

2012-11-29 Kai Tietz

	PR target/53912
	* prefix.c (lookup_key): Explicit cast return-type of xmalloc/xrealloc
	to char *.

Tested for i686-w64-mingw32, x86_64-w64-mingw32, and
x86_64-unknown-gnu-linux. Ok for apply?

Regards,
Kai

Index: prefix.c
===================================================================
--- prefix.c    (Revision 193925)
+++ prefix.c    (Arbeitskopie)
@@ -157,12 +157,12 @@ lookup_key (char *key)
     }

   size = 32;
-  dst = xmalloc (size);
+  dst = (char *) xmalloc (size);

   res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
   if (res == ERROR_MORE_DATA && type == REG_SZ)
     {
-      dst = xrealloc (dst, size);
+      dst = (char *) xrealloc (dst, size);
       res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
     }