Fixed compiler warnings

cmd-line-utils/libedit/vi.c

@@ -1012,8 +1012,9 @@ vi_histedit(EditLine *el, int c __attribute__((__unused__)))
 	if (fd < 0)
 		return CC_ERROR;
 	cp = el->el_line.buffer;
-	write(fd, cp, el->el_line.lastchar - cp +0u);
-	write(fd, "\n", 1);
+	if (write(fd, cp, el->el_line.lastchar - cp +0u) == -1 ||
+            write(fd, "\n", 1) == -1)
+          return CC_ERROR;
 	pid = fork();
 	switch (pid) {
 	case -1:

storage/xtradb/buf/buf0buf.c

@@ -2196,7 +2196,7 @@ buf_page_get_gen(
 	ulint		fix_type;
 	ibool		must_read;
 	ulint		retries = 0;
-	mutex_t*	block_mutex;
+	mutex_t*	block_mutex= 0;
 	trx_t*          trx = NULL;
 	ulint           sec;
 	ulint           ms;