Fix: Corrected the include of <stdint.h> and <inttypes.h> to match IEEE Std 1003.1-2017 ("POSIX 7")

src/compat.h

@@ -47,9 +47,10 @@
 #  define PRId64  "I64d"
 #else
 #  define PATH_SEPARATOR "/"
-#  if defined(HAVE_STDINT_H)
+#  ifdef HAVE_STDINT_H
 #    include <stdint.h>
-#  elif defined(HAVE_INTTYPES_H)
+#  endif
+#  ifdef HAVE_INTTYPES_H
 #    include <inttypes.h>
 #  endif
 #endif