Windows adb: include stdint.h for uint8_t on MinGW-w64

Change-Id: I84b8284bc034feb0acd313b0aad9e2fa5868854f
diff --git a/adb.c b/adb.c
index 9871939..2f30543 100644
--- a/adb.c
+++ b/adb.c
@@ -25,6 +25,7 @@
 #include <string.h>
 #include <time.h>
 #include <sys/time.h>
+#include <stdint.h>
 
 #include "sysdeps.h"
 #include "adb.h"