libraries/protobuf-c: Fix build with new protobuf3.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

libraries/protobuf-c/protobuf-c.SlackBuild

@@ -26,7 +26,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=protobuf-c
 VERSION=${VERSION:-1.5.1}
-BUILD=${BUILD:-2}
+BUILD=${BUILD:-3}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
@@ -73,6 +73,10 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+# Fix protobuf 30.x
+patch -p1 < $CWD/762.patch
+
+autoreconf -vif
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \