scripts/db in rvm-0.1.39 vs scripts/db in rvm-0.1.40

@@ -23,13 +23,13 @@
   usage
   exit 1
 else
   value="$*"
   if [[ "unset" = "$value" ]] || [[ "delete" = "$value" ]] ; then
-    sed -i.tmp "s#^$key=.*\$##" $database_file
+    sed -i.tmp -e "s#^$key=.*\$##" -e '/^$/d' $database_file
   else
     if [[ -z "$value" ]] ; then # get
-      awk -F= '/^'"$key"'=/' $database_file | sed "s#^$key=##"
+      awk -F= '/^'"$key"'=/' $database_file | sed -e "s#^$key=##" -e '/^$/d'
     else # set
       if [[ -z "$(awk -F= "/^'"$key"'=/{print $2}" $database_file)" ]] ; then # append
         echo "$key=$value" >> $database_file
       else # overwrite
         sed -i.tmp "s#^$key=.*\$#$key=$value#" $database_file