--- a/mercurial/manifest.c	Thu Mar 12 14:20:32 2015 -0700
+++ b/mercurial/manifest.c	Fri Mar 13 22:50:40 2015 -0400
@@ -104,7 +104,7 @@
 		self->maxlines *= 2;
 		self->lines = realloc(self->lines, self->maxlines * sizeof(line));
 	}
-	return self->lines;
+	return !!self->lines;
 }
 
 /*