[core] StackTrace: fixes a crash with very long symbol names and the missing allocated buffer.
[core] StackTrace: fixes a crash with very long symbol names and the missing allocated buffer.

christianparpart/x0,xzero/x0,xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0