Loop.cpp: fix memleak happening with unknown tcp host

==28424== 6 bytes in 1 blocks are definitely lost in loss record 1 of 7 ==28424== at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==28424== by 0x541D4D9: strndup (strndup.c:43) ==28424== by 0x4E8AD4B: ChannelEndPoint::getTCPHostAndPort(char**, long*) const (ChannelEndPoint.cpp:311) ==28424== by 0x4EBE9CC: ConnectToRemote(ChannelEndPoint&) (Loop.cpp:6656) ==28424== by 0x4EB0A4C: SetupProxyConnection() (Loop.cpp:3205) ==28424== by 0x4EDC81A: handleNegotiationInLoop(int&, fd_set&, fd_set&, timeval&) (Loop.cpp:14308) ==28424== by 0x4EAE40F: NXTransPrepare (Loop.cpp:2576) ==28424== by 0x4EAA801: NXTransContinue (Loop.cpp:1610) ==28424== by 0x4EB50C9: WaitCleanup() (Loop.cpp:4436) ==28424== by 0x4EA9507: NXTransProxy (Loop.cpp:1235) ==28424== by 0x400B2A: main (Main.c:111)

Loop.cpp: fix memleak happening with unknown tcp host
9e8bd2e1 · Ulrich Sibiller · ce293647 · 9e8bd2e1
Commit 9e8bd2e1 authored Dec 27, 2017 by Ulrich Sibiller
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Loop.cpp nxcomp/src/Loop.cpp +1 -0

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--- a/nxcomp/src/Loop.cpp
+++ b/nxcomp/src/Loop.cpp
@@ -6482,6 +6482,7 @@ int PrepareProxyConnectionTCP(char** hostName, long int* portNum, int* timeout, 
        cerr << "Error" << ": Unknown remote host '"
         << *hostName << "'.\n";

+    SAFE_FREE(*hostName);
    HandleCleanup();
  }