block/reqlist: reqlist_find_conflict(): use ranges_overlap()

Let's reuse convenient helper.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220303194349.2304213-8-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

block/reqlist.c

@@ -13,6 +13,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/range.h"
 
 #include "block/reqlist.h"
 
@@ -35,7 +36,7 @@ BlockReq *reqlist_find_conflict(BlockReqList *reqs, int64_t offset,
     BlockReq *r;
 
     QLIST_FOREACH(r, reqs, list) {
-        if (offset + bytes > r->offset && offset < r->offset + r->bytes) {
+        if (ranges_overlap(offset, bytes, r->offset, r->bytes)) {
             return r;
         }
     }