initscript fkt: ignore blank lines in readhash

Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/initscripts/system/functions

@@ -899,6 +899,12 @@ readhash() {
 
 	local line
 	while read -r line; do
+
+		# Skip Blank Lines
+		if [[ ${line} =~ ^[[:space:]]*$ ]]; then
+			continue
+		fi
+
 		local key="${line%=*}"
 		local val="${line#*=}"