am 61ae5dfd: Merge "fastboot: add errno.h to fix windows build"

# Via Colin Cross (1) and Gerrit Code Review (1)
* commit '61ae5dfda0ddf74b5f05446aa1f76f3aa1917202':
  fastboot: add errno.h to fix windows build
diff --git a/fastboot/engine.c b/fastboot/engine.c
index 6c636cd..8d46991 100644
--- a/fastboot/engine.c
+++ b/fastboot/engine.c
@@ -29,6 +29,7 @@
 #include "fastboot.h"
 #include "make_ext4fs.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>