SWDEV-251091: Added null checks and empty file check in hip_module and hip_platform

Change-Id: Iad99f996dcf90ffb86f62e79bf4cbd53b35b7e3b

rocclr/hip_code_object.cpp

@@ -11,7 +11,7 @@
 namespace hip {
 
 uint64_t CodeObject::ElfSize(const void *emi) {
-  return amd::Elf::getElfSize(emi);
+  return amd::Elf::getElfSize(emi);
 }
 
 bool CodeObject::isCompatibleCodeObject(const std::string& codeobj_target_id,
@@ -180,6 +180,10 @@ hipError_t DynCO::getDynFunc(hipFunction_t* hfunc, std::string func_name) {
 
   CheckDeviceIdMatch();
 
+  if(hfunc == nullptr) {
+    return hipErrorInvalidValue;
+  }
+
   auto it = functions_.find(func_name);
   if (it == functions_.end()) {
     DevLogPrintfError("Cannot find the function: %s ", func_name.c_str());