[Pidgin] #17227: [PATCH] fix gg compilation (misses purple_strequal() declaration)

[Pidgin]

#17227: [PATCH] fix gg compilation (misses purple_strequal() declaration)
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 Reporter:  mandree  |      Owner:
     Type:  defect   |     Status:  new
Milestone:  2.12.1   |  Component:  Gadu-Gadu
  Version:  2.12.0   |   Keywords:
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 On Hg release-2.x.y, currently libpurple/protocols/gg does not compile
 with several error:s that miss the purple_strequal() declaration.

 The attached patch fixes these by adding #include "util.h" where needed.
 Please apply.

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Ticket URL: <https://developer.pidgin.im/ticket/17227>
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