Cast pid_t to int64_t for use in format specifiers

Fix AIX warnings concerning incorrect format specifiers for
variables with type pid_t by casting them to int64_t since
pid_t is not guaranteed to be a long integer

Signed-off-by: Dylan Tuttle <jdylantuttle@gmail.com>

compiler/ras/Debug.cpp

@@ -4949,8 +4949,8 @@ void TR_Debug::setupDebugger(void *addr)
          char * Argv[20];
 
          yield();
-         sprintf(cfname, "_%ld_", getpid());
-         sprintf(pp,"%ld", ppid);
+         sprintf(cfname, "_%ld_", (int64_t)getpid());
+         sprintf(pp, "%ld", (int64_t)ppid);
          Argv[1] = "-a";
          Argv[2] = pp;
          Argv[3] = NULL;