[gimp/wip/Jehan/gitlab-ci-win-32-bit] Disable vala on GIMP too.

[Jehan <jehanp src gnome org>]

commit 869a710a5972d48ce340ec49a14ff5eb987ed810
Author: Jehan <jehan girinstud io>
Date:   Sun May 9 03:08:00 2021 +0200

    Disable vala on GIMP too.

 build/windows/gitlab-ci/build-gimp-msys2.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/build/windows/gitlab-ci/build-gimp-msys2.sh b/build/windows/gitlab-ci/build-gimp-msys2.sh
index a7a71cdba1..2d61699647 100644
--- a/build/windows/gitlab-ci/build-gimp-msys2.sh
+++ b/build/windows/gitlab-ci/build-gimp-msys2.sh
@@ -6,10 +6,12 @@ if [[ "$MSYSTEM" == "MINGW32" ]]; then
     export MSYS2_ARCH="i686"
     export ACLOCAL_FLAGS="-I/c/msys64/mingw32/share/aclocal"
     export PATH="/c/msys64/mingw32/bin:$PATH"
+    export GIMP_OPTIONS="--with-vala=no --enable-vala=no"
 else
     export MSYS2_ARCH="x86_64"
     export ACLOCAL_FLAGS="-I/c/msys64/mingw64/share/aclocal"
     export PATH="/c/msys64/mingw64/bin:$PATH"
+    export GIMP_OPTIONS=""
 fi
 
 # Why do we even have to remove these manually? The whole thing is
@@ -95,7 +97,7 @@ export XDG_DATA_DIRS="${GIMP_PREFIX}/share:/mingw64/share/"
 
 mkdir _build
 cd _build
-../autogen.sh --prefix="${GIMP_PREFIX}"
+../autogen.sh --prefix="${GIMP_PREFIX}" ${GIMP_OPTIONS}
 make -j4
 make install
 cd ..