[gnome-keyring] build: Fix tap-driver to respect tests that skip completely

[Stefan Walter <stefw src gnome org>]

commit 7e75a62e846551c19b9c875f7b237a07ee3b93e1
Author: Stef Walter <stefw gnome org>
Date:   Tue Sep 9 16:51:32 2014 +0200

    build: Fix tap-driver to respect tests that skip completely

 build/tap-driver |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/build/tap-driver b/build/tap-driver
index 96fd219..1205425 100755
--- a/build/tap-driver
+++ b/build/tap-driver
@@ -222,9 +222,12 @@ class TapDriver(Driver):
             if code != "SKIP":
                 skipped = False
 
-        if not self.errored and returncode:
-            self.report_error("process failed: %d" % returncode)
-            self.errored = True
+        if not self.errored:
+            if returncode == 77:
+                skipped = True
+            elif returncode:
+                self.report_error("process failed: %d" % returncode)
+                self.errored = True
 
         # Check the plan
         if not self.errored: