extra/protobuf: guard patch against missing prepare()

1 files changed, 4 insertions, 1 deletions

diff --git a/extra/protobuf/PKGBUILD b/extra/protobuf/PKGBUILD
index 9e67a5b0..34eb56cb 100644
--- a/extra/protobuf/PKGBUILD
+++ b/extra/protobuf/PKGBUILD
@@ -12,7 +12,10 @@ _prepare() {
 }
 
 eval "$(
-  declare -f prepare | \
+  {
+    declare -f prepare || \
+    echo 'prepare()'
+  } | \
     sed '$ i _prepare'
 )"