commitpkg: Avoid unnecessary use of grep(1)

Use bash patterns instead of using grep(1) to check if a source file
contains the string "://".

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

commitpkg

@@ -79,9 +79,9 @@ esac
 
 # check if all local source files are under version control
 for s in "${source[@]}"; do
-	echo "$s" | grep -Fvq '://' && \
-	svn status "$s" | grep -q '^\?' && \
-	abort "$s is not under version control"
+	if [[ $s != *://* ]] && svn status "$s" | grep -q '^\?'; then
+		abort "$s is not under version control"
+	fi
 done
 
 # check if changelog and install files are under version control