Revert 49984 - patch from issue 2762014

libjingle.patch

-Index: talk/base/stringutils.h
-===================================================================
---- talk/base/stringutils.h     (revision 21)
-+++ talk/base/stringutils.h     (working copy)
-@@ -225,15 +225,6 @@
- GCC_ATTR(format(printf,3,4));
- */
- template<class CTYPE>
--size_t sprintfn(CTYPE* buffer, size_t buflen, const CTYPE* format, ...) {
--  va_list args;
--  va_start(args, format);
--  size_t len = vsprintfn(buffer, buflen, format, args);
--  va_end(args);
--  return len;
--}
--
--template<class CTYPE>
- size_t vsprintfn(CTYPE* buffer, size_t buflen, const CTYPE* format,
-                  va_list args) {
-   int len = vsnprintf(buffer, buflen, format, args);
-@@ -244,6 +235,15 @@
-   return len;
- }
- 
-+template<class CTYPE>
-+size_t sprintfn(CTYPE* buffer, size_t buflen, const CTYPE* format, ...) {
-+  va_list args;
-+  va_start(args, format);
-+  size_t len = vsprintfn(buffer, buflen, format, args);
-+  va_end(args);
-+  return len;
-+}
-+
- ///////////////////////////////////////////////////////////////////////////////
- // Allow safe comparing and copying ascii (not UTF-8) with both wide and
- // non-wide character strings.