[Crash Fix] Goto command could crash using dev tools #4158
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I noticed a crash situation using dev tools and the goto command.
Reproduction:
#zone akanon
#list npcs
scroll through the list and click the 'goto' for Zenrel Ottonoggin
zone would crash.
Traced to the check on sep->arg[4] which was "" though returning true in the check. Setup a std::string object to test for emptiness. Resolved the issue.