Coverity fixes

tools/starpu_replay.c

@@ -431,7 +431,7 @@ static void arrays_managing(int mode)
 	{
 		_STARPU_MALLOC(handles_ptr, sizeof(*handles_ptr) * nb_parameters);
 		_STARPU_MALLOC(modes_ptr, sizeof(*modes_ptr) * nb_parameters);
-		_STARPU_CALLOC(reg_signal, nb_parameters, sizeof(char *));
+		_STARPU_CALLOC(reg_signal, nb_parameters, sizeof(char));
 
 	}
 }

tools/starpu_replay_sched.c

@@ -344,6 +344,8 @@ void schedRecInit(const char * filename)
 	}
 
 	fclose(f);
+
+	free(s);
 }
 
 static void do_prefetch(void *arg)