remove extra semicolon from curl-config.in

curl-config.in

@@ -81,13 +81,13 @@ while test $# -gt 0; do
 
     --feature|--features)
         for feature in @SUPPORT_FEATURES@; do
-            echo $feature;
+            echo "$feature"
         done
 	;;
 
     --protocols)
         for protocol in @SUPPORT_PROTOCOLS@; do
-            echo $protocol;
+            echo "$protocol"
         done
 	;;
     --version)