Fix unreadVariable warning

src/nfagraph/ng_repeat.cpp

@@ -854,9 +854,7 @@ void replaceSubgraphWithLazySpecial(NGHolder &g, ReachSubgraph &rsi,
     assert(rsi.repeatMax >= rsi.repeatMin);
 
     DEBUG_PRINTF("entry\n");
-
-    const unordered_set<NFAVertex> involved(rsi.vertices.begin(),
-                                            rsi.vertices.end());
+ 
     vector<NFAVertex> g_succs;
     getSuccessors(g, rsi, &g_succs);
 

src/nfagraph/ng_som.cpp

@@ -3125,7 +3125,7 @@ sombe_rv doSomWithHaig(NG &ng, NGHolder &g, const ExpressionInfo &expr,
 
     // try a redundancy pass.
     if (addSomRedundancy(g, depths)) {
-        depths = getDistancesFromSOM(g);
+        depths = getDistancesFromSOM(g); // cppcheck-suppress unreadVariable
     }
 
     auto regions = assignRegions(g);