Fix [-Wundef] warning in FileInfo extension

Author: Girgias

ext/fileinfo/libmagic/file.h

@@ -90,7 +90,7 @@
 
 #define private static
 
-#if HAVE_VISIBILITY && !defined(WIN32)
+#if defined(HAVE_VISIBILITY) && !defined(WIN32)
 #define public  __attribute__ ((__visibility__("default")))
 #ifndef protected
 #define protected __attribute__ ((__visibility__("hidden")))

ext/fileinfo/libmagic/funcs.c

@@ -255,7 +255,7 @@ file_buffer(struct magic_set *ms, php_stream *stream, zend_stat_t *st,
 	}
 #endif
 
-#if PHP_FILEINFO_UNCOMPRESS
+#ifdef PHP_FILEINFO_UNCOMPRESS
 	if ((ms->flags & MAGIC_NO_CHECK_COMPRESS) == 0) {
 		m = file_zmagic(ms, &b, inname);
 		if ((ms->flags & MAGIC_DEBUG) != 0)
@@ -367,7 +367,7 @@ file_buffer(struct magic_set *ms, php_stream *stream, zend_stat_t *st,
 		if (file_printf(ms, "%s", code_mime) == -1)
 			rv = -1;
 	}
-#if PHP_FILEINFO_UNCOMPRESS
+#ifdef PHP_FILEINFO_UNCOMPRESS
  done_encoding:
 #endif
 	efree(rbuf);
@@ -434,7 +434,7 @@ file_getbuffer(struct magic_set *ms)
 	}
 	ms->o.pbuf = pbuf;
 
-#if defined(HAVE_WCWIDTH)
+#ifdef HAVE_WCWIDTH
 	{
 		mbstate_t state;
 		wchar_t nextchar;