--- dyld/dyld-551.3/dyld3/shared-cache/OptimizerLinkedit.cpp
+++ dyld/dyld-519.2.2/dyld3/shared-cache/OptimizerLinkedit.cpp
@@ -296,10 +296,9 @@
         DepNode& node = _depDAG[op->machHeader()];
         for (const char* depPath : op->getDownwardDependents()) {
             macho_header<P>* depMH = _dylibPathToMachHeader[depPath];
-            if ( depMH != nullptr ) {
-                DepNode* depNode = &_depDAG[depMH];
-                node._dependents.push_back(depNode);
-            }
+            assert(depMH != NULL);
+            DepNode* depNode = &_depDAG[depMH];
+            node._dependents.push_back(depNode);
         }
     }