Prefer a != b over !(a == b) (libarchive#2303)

This is not C++ or another language where this may have been necessary,
nor is the condition complex at all; it is only a single equality
comparison.

Author: AZero13

libarchive/archive_read_support_format_rar.c

@@ -2607,8 +2607,7 @@ read_next_symbol(struct archive_read *a, struct huffman_code *code)
   rar_br_consume(br, code->tablesize);
 
   node = value;
-  while (!(code->tree[node].branches[0] ==
-    code->tree[node].branches[1]))
+  while (code->tree[node].branches[0] != code->tree[node].branches[1])
   {
     if (!rar_br_read_ahead(a, br, 1)) {
       archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,

libarchive/archive_write_set_format_gnutar.c

@@ -296,7 +296,7 @@ archive_write_gnutar_header(struct archive_write *a,
 	/* Only regular files (not hardlinks) have data. */
 	if (archive_entry_hardlink(entry) != NULL ||
 	    archive_entry_symlink(entry) != NULL ||
-	    !(archive_entry_filetype(entry) == AE_IFREG))
+	    archive_entry_filetype(entry) != AE_IFREG)
 		archive_entry_set_size(entry, 0);
 
 	if (AE_IFDIR == archive_entry_filetype(entry)) {

libarchive/archive_write_set_format_ustar.c

@@ -267,7 +267,7 @@ archive_write_ustar_header(struct archive_write *a, struct archive_entry *entry)
 	/* Only regular files (not hardlinks) have data. */
 	if (archive_entry_hardlink(entry) != NULL ||
 	    archive_entry_symlink(entry) != NULL ||
-	    !(archive_entry_filetype(entry) == AE_IFREG))
+	    archive_entry_filetype(entry) != AE_IFREG)
 		archive_entry_set_size(entry, 0);
 
 	if (AE_IFDIR == archive_entry_filetype(entry)) {

libarchive/archive_write_set_format_v7tar.c

@@ -241,7 +241,7 @@ archive_write_v7tar_header(struct archive_write *a, struct archive_entry *entry)
 	/* Only regular files (not hardlinks) have data. */
 	if (archive_entry_hardlink(entry) != NULL ||
 	    archive_entry_symlink(entry) != NULL ||
-	    !(archive_entry_filetype(entry) == AE_IFREG))
+	    archive_entry_filetype(entry) != AE_IFREG)
 		archive_entry_set_size(entry, 0);
 
 	if (AE_IFDIR == archive_entry_filetype(entry)) {