Fix wrong flags check for compression method in phar_object.c

I found this issue using static analysis tools, it reported that the condition was always false.
We can see that flags is assigned in the switch statement above, but a mistake was made in the comparison.

Closes GH-10328

Signed-off-by: George Peter Banyard <girgias@php.net>

Author: ndossche

NEWS

@@ -38,6 +38,9 @@ PHP                                                                        NEWS
   . Fix zend_jit_find_trace() crashes. (Max Kellermann)
   . Added missing lock for EXIT_INVALIDATE in zend_jit_trace_exit. (Max Kellermann)
 
+- Phar:
+  . Fix wrong flags check for compression method in phar_object.c (nielsdos)
+
 - PHPDBG:
   . Fix undefined behaviour in phpdbg_load_module_or_extension(). (nielsdos)
   . Fix NULL pointer dereference in phpdbg_create_conditional_breal(). (nielsdos)

ext/phar/phar_object.c

@@ -3312,7 +3312,7 @@ PHP_METHOD(Phar, compressFiles)
 	}
 
 	if (!pharobj_cancompress(&phar_obj->archive->manifest)) {
-		if (flags == PHAR_FILE_COMPRESSED_GZ) {
+		if (flags == PHAR_ENT_COMPRESSED_GZ) {
 			zend_throw_exception_ex(spl_ce_BadMethodCallException, 0,
 				"Cannot compress all files as Gzip, some are compressed as bzip2 and cannot be decompressed");
 		} else {