MAINTAINERS: make image fuzzer Stefan Hajnoczi's responsibility

Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

MAINTAINERS

@@ -779,7 +779,6 @@ F: block/
 F: hw/block/
 F: qemu-img*
 F: qemu-io*
-F: tests/image-fuzzer/
 F: tests/qemu-iotests/
 T: git git://repo.or.cz/qemu/kevin.git block
 T: git git://github.com/stefanha/qemu.git block
@@ -1285,3 +1284,9 @@ M: Kevin Wolf <kwolf@redhat.com>
 L: qemu-block@nongnu.org
 S: Supported
 F: block/vvfat.c
+
+Image format fuzzer
+M: Stefan Hajnoczi <stefanha@redhat.com>
+L: qemu-block@nongnu.org
+S: Supported
+F: tests/image-fuzzer/