properly set the pipe blocking option

ext/standard/php_fopen_wrapper.c

@@ -400,17 +400,19 @@ php_stream * php_stream_url_wrap_php(php_stream_wrapper *wrapper, const char *pa
 		if (stream == NULL) {
 			close(fd);
 		}
+	}
+
 #ifdef PHP_WIN32
 		{
-			zval *blocking_pipes = php_stream_context_get_option(context, "pipe", "blocking");
-			if (blocking_pipes) {
-				convert_to_long(blocking_pipes);
-				php_stream_set_option(stream, PHP_STREAM_OPTION_PIPE_BLOCKING, Z_LVAL_P(blocking_pipes), NULL);
+			if (stream && context) {
+				zval *blocking_pipes = php_stream_context_get_option(context, "pipe", "blocking");
+				if (blocking_pipes) {
+					convert_to_long(blocking_pipes);
+					php_stream_set_option(stream, PHP_STREAM_OPTION_PIPE_BLOCKING, Z_LVAL_P(blocking_pipes), NULL);
+				}
 			}
 		}
 #endif
-	}
-
 	return stream;
 }
 /* }}} */

ext/standard/proc_open.c

@@ -546,7 +546,6 @@ PHP_FUNCTION(proc_open)
 			}
 
 #ifdef PHP_WIN32
-			php_stream_set_option(stream, PHP_STREAM_OPTION_PIPE_BLOCKING, blocking_pipes, NULL);
 			descriptors[ndesc].childend = dup_fd_as_handle((int)fd);
 			if (descriptors[ndesc].childend == NULL) {
 				php_error_docref(NULL, E_WARNING, "unable to dup File-Handle for descriptor %d", nindex);
@@ -941,6 +940,7 @@ PHP_FUNCTION(proc_open)
 #ifdef PHP_WIN32
 				stream = php_stream_fopen_from_fd(_open_osfhandle((zend_intptr_t)descriptors[i].parentend,
 							descriptors[i].mode_flags), mode_string, NULL);
+				php_stream_set_option(stream, PHP_STREAM_OPTION_PIPE_BLOCKING, blocking_pipes, NULL);
 #else
 				stream = php_stream_fopen_from_fd(descriptors[i].parentend, mode_string, NULL);
 # if defined(F_SETFD) && defined(FD_CLOEXEC)