MemModel: quickfix hack for changes in gep_type_iterator behavior.

See ongoing discussion for context:

SVF-tools#18

Mostly I'm just curious what this does to results on our programs,
this is likely not the right thing to do.

lib/MemoryModel/MemModel.cpp

@@ -193,7 +193,7 @@ bool SymbolTableInfo::computeGepOffset(const llvm::User *V, LocationSet& ls) {
         // Handling array types, skipe array handling here
         // We treat whole array as one, then we can distinguish different field of an array of struct
         // e.g. s[1].f1 is differet from s[0].f2
-        if(isa<ArrayType>(gi.getIndexedType()))
+        if(gi.isBoundedSequential())
             continue;