[gimp] Revert "build: do not build file-mng for 32-bit Windows."

[Jehan <jehanp src gnome org>]

commit 649687b48b25a9dea18e3a516ada2641f006f85d
Author: Jehan <jehan girinstud io>
Date:   Sat Apr 2 17:25:47 2022 +0200

    Revert "build: do not build file-mng for 32-bit Windows."
    
    This reverts commit 6ae69f5e84b36300e89a01e08c913329fcf95a9d.
    
    Our 32-bit file-mng build has been fixed normally now. I should have
    removed this commit before merging!

 build/windows/gitlab-ci/build-gimp-msys2.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/build/windows/gitlab-ci/build-gimp-msys2.sh b/build/windows/gitlab-ci/build-gimp-msys2.sh
index 6e93d8e722..f787799539 100644
--- a/build/windows/gitlab-ci/build-gimp-msys2.sh
+++ b/build/windows/gitlab-ci/build-gimp-msys2.sh
@@ -6,8 +6,7 @@ if [[ "$MSYSTEM" == "MINGW32" ]]; then
     export ARTIFACTS_SUFFIX="-w32"
     export MSYS2_ARCH="i686"
     export MSYS2_PREFIX="/c/msys64/mingw32"
-    # 32-bit libmng MSYS2 package is broken: https://github.com/msys2/MINGW-packages/issues/11136
-    export GIMP_OPTIONS="-Dvala-plugins=disabled -Dmng=disabled"
+    export GIMP_OPTIONS="-Dvala-plugins=disabled"
 else
     export ARTIFACTS_SUFFIX="-w64"
     export MSYS2_ARCH="x86_64"