Fix to properly wipe filesystems larger than 4 gigabytes.

Pass the wipe size to the wipe function in a 64 bit int.

Change-Id: Ia6a0c70c8ddacaae35d17732d61b126219e5c158
diff --git a/ext4_utils/wipe.c b/ext4_utils/wipe.c
index 990b82f..c7329cf 100644
--- a/ext4_utils/wipe.c
+++ b/ext4_utils/wipe.c
@@ -30,7 +30,7 @@
 #define BLKSECDISCARD _IO(0x12,125)
 #endif
 
-int wipe_block_device(int fd, int len)
+int wipe_block_device(int fd, s64 len)
 {
 	u64 range[2];
 	int ret;
@@ -54,7 +54,7 @@
 	return 0;
 }
 #else
-int wipe_block_device(int fd, int len)
+int wipe_block_device(int fd, s64 len)
 {
 	error("wipe not supported on non-linux platforms");
 	return 1;