Cover speedup: Fix set erase

alib2algo_experimental/src/stringology/cover/ApproximateCoversComputation.h

@@ -179,8 +179,7 @@ unsigned int ApproximateCoversComputation::smallestDistanceCover(
         auto it = subset.begin();
         while (it != subset.end()) {
             if ((int) (*it).second == l && (*it) != *subset.begin() && (*it) != (*last)) {
-                subset.erase(it);
-                it = subset.begin();
+                it = subset.erase(it);
             } else {
                 it++;
             }