[grilo] build: fix build due syntax error

[Bastien Nocera <hadess src gnome org>]

commit 8e511b672b3d37b43d0b8d036896a2a196f143d0
Author: Victor Toso <me victortoso com>
Date:   Thu Sep 24 11:21:20 2015 +0200

    build: fix build due syntax error
    
    commit 2a73d7deaad9fbdebf3441d72b aims to fix missing dependencies but
    introduced syntax error.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=755516

 configure.ac |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 41c2de5..658fc60 100644
--- a/configure.ac
+++ b/configure.ac
@@ -173,8 +173,7 @@ AC_ARG_ENABLE([grl_net],
                 [Enable Grilo Net library (default: auto)]),
         [
                 case "$enableval" in
-                     yes)
-                     auto)
+                     yes | auto)
                         if test "x$HAVE_LIBSOUP" = "xno"; then
                            AC_MSG_ERROR([libsoup-2.4 not found, install it or use --disable-grl-net])
                         fi
@@ -198,8 +197,7 @@ AC_ARG_ENABLE([grl_pls],
                 [Enable Grilo Pls library (default: auto)]),
         [
                 case "$enableval" in
-                     yes)
-                     auto)
+                     yes | auto)
                         if test "x$HAVE_TOTEM_PL_PARSER" = "xno"; then
                            AC_MSG_ERROR([totem-pl-parser not found, install it or use --disable-grl-pls])
                         fi