Fix [-Wmaybe-uninitialized] and [-Wduplicated-branches] in FFI

Author: Girgias

ext/ffi/ffi.c

@@ -7328,6 +7328,7 @@ void zend_ffi_val_character(zend_ffi_val *val, const char *str, size_t str_len)
 					n = str[3] - 'a';
 				} else {
 					val->kind = ZEND_FFI_VAL_ERROR;
+					return;
 				}
 				if ((str[4] >= '0' && str[4] <= '7') && str_len == 6) {
 					n = n * 16 + (str[4] - '0');

ext/ffi/ffi_parser.c

@@ -2991,11 +2991,7 @@ static int parse_attrib(int sym, zend_ffi_dcl *dcl) {
 			} else {
 				yy_error_sym("unexpected", sym);
 			}
-		} else if (sym == YY_CONST) {
-			sym = get_sym();
-		} else if (sym == YY___CONST) {
-			sym = get_sym();
-		} else {
+		} else { /* sym == YY_CONST || sym == YY___CONST || something else */
 			sym = get_sym();
 		}
 	}

sapi/cli/php_cli_server.c

@@ -1879,12 +1879,8 @@ static size_t php_cli_server_client_send_through(php_cli_server_client *client,
 				int nfds = php_pollfd_for(client->sock, POLLOUT, &tv);
 				if (nfds > 0) {
 					continue;
-				} else if (nfds < 0) {
-					/* error */
-					php_handle_aborted_connection();
-					return nbytes_left;
 				} else {
-					/* timeout */
+					/* error or timeout */
 					php_handle_aborted_connection();
 					return nbytes_left;
 				}