[asan] Fix Windows i386 regression (#73650)

This change makes x64 enablement case explicit and
adds an else case for 32bit which fixes a regression
on Windows i386 asan builds introduced
by #66973.

Author: farzonl

compiler-rt/lib/sanitizer_common/sanitizer_platform.h

@@ -263,9 +263,12 @@
 #if SANITIZER_WINDOWS64 && SANITIZER_ARM64
 #  define SANITIZER_WINDOWS_ARM64 1
 #  define SANITIZER_WINDOWS_x64 0
-#else
+#elif SANITIZER_WINDOWS64 && !SANITIZER_ARM64
 #  define SANITIZER_WINDOWS_ARM64 0
 #  define SANITIZER_WINDOWS_x64 1
+#else
+#  define SANITIZER_WINDOWS_ARM64 0
+#  define SANITIZER_WINDOWS_x64 0
 #endif
 
 #if SANITIZER_SOLARIS && SANITIZER_WORDSIZE == 32