[gnome-sdk-images] Attempt to fix build after previous commit

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 1fc62d1eafbae213655561fa959e7fc1b7899ef4
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Mon Nov 13 19:43:25 2017 -0600

    Attempt to fix build after previous commit

 org.gnome.Sdk.json.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index 911583b..2162243 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -733,7 +733,7 @@
             "buildsystem": "cmake",
             "config-opts": [
                 "-DCMAKE_INSTALL_PREFIX:PATH=/usr",
-                "-DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib",
+                "-DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib"
             ],
             "sources": [
                 {
@@ -747,7 +747,7 @@
             "buildsystem": "cmake",
             "config-opts": [
                 "-DCMAKE_INSTALL_PREFIX:PATH=/usr",
-                "-DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib",
+                "-DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib"
             ],
             "sources": [
                 {