mtp: refactor lcp to be possible to use range

It took some time to understand why changing a regular `for` to a `range` one leads to behavior changes; let it be more clear and explicit. Signed-off-by: Pavel Karpy <[email protected]>
nspcc-dev · Sep 4, 2024 · eeb7c86 · eeb7c86
1 parent 1c66a3a
commit eeb7c86
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/pkg/core/mpt/helpers.go b/pkg/core/mpt/helpers.go
@@ -13,14 +13,13 @@ func lcp(a, b []byte) []byte {
 		return lcp(b, a)
 	}
 
-	var i int
-	for i = 0; i < len(b); i++ {
+	for i := range b {
 		if a[i] != b[i] {
-			break
+			return a[:i]
 		}
 	}
 
-	return a[:i]
+	return b
 }
 
 func lcpMany(kv []keyValue) []byte {