Define HAVE_INTRIN_H on Windows; no need to reinclude it in runtime.c

src/libsodium/include/sodium/private/common.h

@@ -197,6 +197,7 @@ store32_be(uint8_t dst[4], uint32_t w)
 
 #include <intrin.h>
 
+# define HAVE_INTRIN_H    1
 # define HAVE_MMINTRIN_H  1
 # define HAVE_EMMINTRIN_H 1
 # define HAVE_PMMINTRIN_H 1

src/libsodium/sodium/runtime.c

@@ -3,10 +3,6 @@
 #ifdef HAVE_ANDROID_GETCPUFEATURES
 # include <cpu-features.h>
 #endif
-#if defined(HAVE_INTRIN_H) || (defined(_MSC_VER) && \
-     (defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86)))
-# include <intrin.h>
-#endif
 
 #include "private/common.h"
 #include "runtime.h"