GPU Calc:Fixed compiling warning in opbase.cxx&op_math.cxx

Change-Id: I885bf77a85f7f479a8a9632e64af306be243cdd0

sc/source/core/opencl/op_math.cxx

@@ -990,8 +990,6 @@ void OpSinh::GenSlidingWindowFunction(std::stringstream &ss,
             const std::string &sSymName, SubArguments &vSubArguments)
 {
     FormulaToken *tmpCur = vSubArguments[0]->GetFormulaToken();
-    static_cast<const
-              formula::SingleVectorRefToken *>(tmpCur);
     ss << "\ndouble " << sSymName;
     ss << "_"<< BinFuncName() <<"(";
     for (unsigned i = 0; i < vSubArguments.size(); i++)

sc/source/core/opencl/opbase.cxx

@@ -42,7 +42,7 @@ VectorRef::VectorRef(const std::string &s, FormulaTreeNodeRef ft, int idx):
 VectorRef::~VectorRef()
 {
     if (mpClmem) {
-        cl_int ret = clReleaseMemObject(mpClmem);
+        clReleaseMemObject(mpClmem);
     }
 }