Initialize variable and unset at end

include/tests_shells

@@ -275,6 +275,7 @@
     Register --test-no SHLL-6290 --weight H --network NO --category security --description "Perform Shellshock vulnerability tests"
     if [ ${SKIPTEST} -eq 0 ]; then
         FOUND=0
+        x=""
         #Display --indent 2 --text "- Testing for Shellshock vulnerability"
         LogText "Test: Check if bash is in the list of shells."
         if [ -f /etc/shells ]; then
@@ -396,6 +397,7 @@
           else
             AddHP 5 5
         fi
+        unset x
     fi
 #
 #################################################################################