SDL_image: workflows: Disable automated test on macOS for now

From ce31fd8779488390ce632b24368afaaabbf31350 Mon Sep 17 00:00:00 2001
From: Simon McVittie <[EMAIL REDACTED]>
Date: Fri, 20 May 2022 19:32:54 +0100
Subject: [PATCH] workflows: Disable automated test on macOS for now

Various test failures are under investigation (see #248).

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 87c6bb8..a65b5e3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -132,7 +132,7 @@ jobs:
         parallel="$(getconf _NPROCESSORS_ONLN)"
         make -j"${parallel}" -C build-autotools V=1
     - name: Run tests with Autotools
-      if: "! matrix.platform.cmake"
+      if: "runner.os == 'Linux' && ! matrix.platform.cmake"
       run: |
         set -eu
         parallel="$(getconf _NPROCESSORS_ONLN)"