fix windows build

Author: michael-kenzel

src/common/portability.h

@@ -20,7 +20,7 @@ static_assert(__STDC_VERSION__ >= 201112L, "C11 support is required to build sha
     #define SHADY_FALLTHROUGH
     // It's mid 2022, and this typedef is missing from <stdalign.h>
     // MSVC is not a real C11 compiler.
-    typedef long long max_align_t;
+    typedef double max_align_t;
 #else
     #ifdef USE_VLAS
         #define LARRAY(T, name, size) T name[size]