test-replication: fix leaks

ASAN spotted:
SUMMARY: AddressSanitizer: 301990288 byte(s) leaked in 33 allocation(s).
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20161109104547.23861-1-marcandre.lureau@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/test-replication.c

@@ -85,6 +85,8 @@ static void test_blk_read(BlockBackend *blk, long pattern,
     }
 
     g_free(pattern_buf);
+    g_free(cmp_buf);
+    qemu_iovec_destroy(&qiov);
 }
 
 static void test_blk_write(BlockBackend *blk, long pattern, int64_t offset,
@@ -116,6 +118,7 @@ static void test_blk_write(BlockBackend *blk, long pattern, int64_t offset,
     }
 
     g_free(pattern_buf);
+    qemu_iovec_destroy(&qiov);
 }
 
 /*