setlocale(, "") now no longer returns an error, but returns "C" now; we don't

(yet) support any locale anyway, so evaluating LC_ALL and friends doesn't make
much sense at this point.
This fixes bug #1499.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22297 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/libroot/posix/locale/setlocale.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2004-2007, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -11,7 +11,7 @@
 char *
 setlocale(int category, const char *locale)
 {
-	if (locale == NULL)
+	if (locale == NULL || !locale[0])
 		return "C";
 
 	// ToDo: this should check if liblocale.so is available and use its functions