[MacPorts] #37399: Add gdk-pixbuf2 as dep to librsvg

[MacPorts]

#37399: Add gdk-pixbuf2 as dep to librsvg
-----------------------------+--------------------------------
 Reporter:  robsonpeixoto@…  |      Owner:  macports-tickets@…
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:  2.1.2
 Keywords:  haspatch         |       Port:  librsvg
-----------------------------+--------------------------------
 As can see on this part of log
 {{{
 :info:configure checking for LIBRSVG... no
 :info:configure configure: error: Package requirements (        gdk-
 pixbuf-2.0 >= 1.3.7         glib-2.0 >= 2.12.0      gio-2.0 >= 2.24.0
 libxml-2.0 >= 2.7.0     pangocairo >= 1.16.0    cairo >= 1.2.0  cairo-png
 >= 1.2.0
 :info:configure         libcroco-0.6 >= 0.6.1) were not met:
 :info:configure
 :info:configure No package 'gdk-pixbuf-2.0' found
 :info:configure
 }}}

 the librsvg needs of gdk-pixbuf2

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Ticket URL: <https://trac.macports.org/ticket/37399>
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