[gnome-builder] meson: Fix typo

[Patrick Griffis <pgriffis src gnome org>]

commit c141eafe454b638dc97efb9c68436b4eb3949d6a
Author: Patrick Griffis <tingping tingping se>
Date:   Wed Dec 14 17:39:36 2016 -0500

    meson: Fix typo

 plugins/meson/meson_plugin/__init__.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/meson/meson_plugin/__init__.py b/plugins/meson/meson_plugin/__init__.py
index 6d6efcf..4565e12 100644
--- a/plugins/meson/meson_plugin/__init__.py
+++ b/plugins/meson/meson_plugin/__init__.py
@@ -381,7 +381,7 @@ class MesonBuildResult(Ide.BuildResult):
         self._postaction_async(callback)
 
     def _postinstall_async(self, callback):
-        self._ppostaction_async(callback, install=True)
+        self._postaction_async(callback, install=True)
 
     def build(self):
         # NOTE: These are ran in a thread and it raising GLib.Error is handled a layer up.