[tor-bugs] #4921 [Pluggable transport]: obfsproxy: use asprintf

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#4921: obfsproxy: use asprintf
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 Reporter:  nickm                |          Owner:  asn
     Type:  enhancement          |         Status:  new
 Priority:  normal               |      Milestone:     
Component:  Pluggable transport  |        Version:     
 Keywords:                       |         Parent:     
   Points:                       |   Actualpoints:     
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 malloc+snprintf is a fragile pattern; tor_asprintf is much less likely to
 bite you because you added numbers wrong or updated a format string
 without making a corresponding change in the allocation.

 Similarly, snprint+strdup() is icky.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4921>
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