tests/test-char are stuck forever on msys2, disable it first

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
---
 tests/Makefile.include | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 497f1f21ff..c645e8972a 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -130,7 +130,9 @@ ifndef CONFIG_TSAN
 # Some tests: test-char, test-qdev-global-props, and test-qga,
 # are not runnable under TSan due to a known issue.
 # https://github.com/google/sanitizers/issues/1116
+ifeq ($(CONFIG_POSIX),y)
 check-unit-$(CONFIG_SOFTMMU) += tests/test-char$(EXESUF)
+endif
 check-unit-$(CONFIG_SOFTMMU) += tests/test-qdev-global-props$(EXESUF)
 ifeq ($(CONFIG_GUEST_AGENT),y)
 check-unit-$(call land,$(CONFIG_LINUX),$(CONFIG_VIRTIO_SERIAL)) += tests/test-qga$(EXESUF)
-- 
2.28.0.windows.1