Under certain timeout conditions when reaching a server, the "host" command will crash with a null pointer exception.<br />
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host[11834]: segfault at 0 ip 000000000040abb8 sp 00007fb7f410dd40 error 4 in host[400000+1b000]<br />
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The null pointer is on the "query" variable at line 1922 in dighost.c<br />
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At line 2689 in dighost.c "query" is checked for not being null but outside of this condition, it is then used without being checked for null at line 2720. To correct the bug a null pointer check should be added. (suggested untested patch included)
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