Newer compilers ( clang 15 ) have turned stricter and errors out instead
of warning on implicit function declations
Fixes
gstssaparse.c:297:12: error: call to undeclared library function 'isspace' with type 'int (int)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
while (isspace(*t))
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2879>
#include "config.h"
#endif
+#include <ctype.h> /* isspace() */
+#include <stdio.h> /* sscanf() */
#include <stdlib.h> /* atoi() */
#include <string.h>