makepkg: fix extraction of soname in find_libdepends

libperl.so results in soname="libperl.so.so" which is wrong.

This returns the correct string: "libperl.so"

Fix-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Florian Pritz <bluewind@xinu.at>

scripts/makepkg.sh.in

@@ -1067,7 +1067,7 @@ find_libdepends() {
 		for sofile in $(LC_ALL=C readelf -d "$filename" 2>/dev/null | sed -nr 's/.*Shared library: \[(.*)\].*/\1/p')
 		do
 			# extract the library name: libfoo.so
-			soname="${sofile%%\.so\.*}.so"
+			soname="${sofile%.so?(+(.+([0-9])))}".so
 			# extract the major version: 1
 			soversion="${sofile##*\.so\.}"
 			if in_array "${soname}" ${depends[@]}; then