[PATCH] util/oslib-win32: Fix fatal assertion in qemu_try_memalign

[Stefan Weil <sw@weilnetz.de>]

The function is called with alignment == 0 which caused an assertion.
Use the code from oslib_posix.c to fix that regression (introduced
by commit ed6f53f9ca9).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 util/oslib-win32.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index ca99356fdf..7b318ea835 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -57,7 +57,11 @@ void *qemu_try_memalign(size_t alignment, size_t size)
     void *ptr;
 
     g_assert(size != 0);
-    g_assert(is_power_of_2(alignment));
+    if (alignment < sizeof(void *)) {
+        alignment = sizeof(void *);
+    } else {
+        g_assert(is_power_of_2(alignment));
+    }
     ptr = _aligned_malloc(size, alignment);
     trace_qemu_memalign(alignment, size, ptr);
     return ptr;
-- 
2.30.2