Possible bugfix: Use insert not emplace fixes nvhpc + gcc9

Author: ptheywood

src/flamegpu/model/AgentDescription.cpp

@@ -211,7 +211,8 @@ AgentFunctionDescription& AgentDescription::newRTCFunction(const std::string& fu
                 printf("rtn %p\n", rtn.get());
                 printf("rtn->rtc_func_name %s\n", rtn->rtc_func_name.c_str());
                 printf("agent->functions.size() %zu\n", agent->functions.size());
-                agent->functions.emplace(function_name, rtn);
+                // agent->functions.emplace(function_name, rtn);
+                agent->functions.insert({function_name, rtn});  // emplace caused nvhpc 21.7 with gcc 9 to segfault
                 printf("%s::%d\n", __FILE__, __LINE__);
                 return *rtn->description;
             } else {