[libxml2] Add CI for MSVC x86

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 09320f0551c8956c3fecc036dd11d63f3ee71aae
Author: Markus Rickert <rickert fortiss org>
Date:   Sun Feb 21 14:26:40 2021 +0100

    Add CI for MSVC x86

 .gitlab-ci.yml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fd2ac6e3..04f37ff1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -234,3 +234,20 @@ cmake:msvc:v141:x64:static:
   variables:
     BUILD_SHARED_LIBS: "OFF"
     SUFFIX: static
+
+.cmake:msvc:v141:x86:
+  extends: .cmake:msvc:v141
+  variables:
+    CMAKE_GENERATOR_PLATFORM: Win32
+
+cmake:msvc:v141:x86:shared:
+  extends: .cmake:msvc:v141:x86
+  variables:
+    BUILD_SHARED_LIBS: "ON"
+    SUFFIX: shared
+
+cmake:msvc:v141:x86:static:
+  extends: .cmake:msvc:v141:x86
+  variables:
+    BUILD_SHARED_LIBS: "OFF"
+    SUFFIX: static