Fixed Segmentation Fault / NULLptr dereference

[tillz]

Signed-off-by: Till Zimmermann [email protected]

This fixes a Segmentation Fault in the client tools I encountered recently when supplying a malformed URL to the -L-Flag (missing trailing /) (cf. #1248).

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[karlp]

This was fixed in 203949a and the linked ticket already.

[ralight]

@karlp This is another one.

@tillz Thanks very much, a fairly minor problem but I'm very pleased to fix it.