Change STRERROR() to be just an alias for strerror() on all platforms

Its a terrible idea to modify the return value of strerror() on any platform. strerror() can (and often does) return immutable string constants - don't try to modify that string even if it does end in trailing white-space (find another solution to that). This change only affects non-*nix builds since we were already doing the right thing for *nix.

src/xpdev/genwrap.h

@@ -272,11 +272,7 @@ DLLEXPORT char*		DLLCALL truncsp_lines(char* str);
 /* Truncate new-line chars off end of string */
 DLLEXPORT char*		DLLCALL truncnl(char* str);
 
-#if defined(__unix__)
-	#define STRERROR(x)		strerror(x)
-#else
-	#define STRERROR(x)		truncsp(strerror(x))
-#endif
+#define STRERROR(x)		strerror(x)
 
 /* Re-entrant version of strerror() */
 DLLEXPORT char*		DLLCALL safe_strerror(int errnum, char* buf, size_t buflen);