[vala] Use correct variable name to add vapigen directories

[Evan Nemerson <evann src gnome org>]

commit 220fe3fdc63498b43b84f8127927b70dfa223bfb
Author: Christian Persch <chpe gnome org>
Date:   Sun Apr 29 20:47:27 2012 +0200

    Use correct variable name to add vapigen directories
    
    Fixes bug 675097.

 vapigen/Makefile.vapigen |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/vapigen/Makefile.vapigen b/vapigen/Makefile.vapigen
index c268960..30e515b 100644
--- a/vapigen/Makefile.vapigen
+++ b/vapigen/Makefile.vapigen
@@ -52,7 +52,7 @@ $(1): $$($(_vapi_name)_GIR)
 	$(_vapigen_silent_prefix) $(VAPIGEN) $(_vapigen_silent_opts) \
 	  --library $(1:.vapi=) \
 	  $(foreach _vapi_metadatadir_name,$(if $($(_vapi_name)_METADATADIRS),$($(_vapi_name)_METADATADIRS),$(VAPIGEN_METADATADIRS)),--metadatadir $(_vapi_metadatadir_name)) \
-	  $(foreach _vapi_dir_name,$(if $($(_vapi_name)_VAPIDIRS),$($(_vapi_name)_DIRS),$(VAPIGEN_VAPIDIRS)),--vapidir $(_vapi_dir_name)) \
+	  $(foreach _vapi_dir_name,$(if $($(_vapi_name)_VAPIDIRS),$($(_vapi_name)_VAPIDIRS),$(VAPIGEN_VAPIDIRS)),--vapidir $(_vapi_dir_name)) \
 	  $(foreach _vapi_dep_name,$(if $($(_vapi_name)_DEPS),$($(_vapi_name)_DEPS),$(VAPIGEN_DEPS)),--pkg $(_vapi_dep_name)) \
 	  $$($(_vapi_name)_FILES)
 endef