Make ext/curl/tests/bug48203_multi.phpt more robust

We don't have a guarantee in which order the output here will
occur. And it's not really relevant for the test anyway, so use a
wildcard.

Author: nikic

ext/curl/tests/bug48203_multi.phpt

@@ -81,9 +81,7 @@ Ok for CURLOPT_WRITEHEADER
 Warning: curl_multi_exec(): CURLOPT_FILE resource has gone away, resetting to default in %s on line %d
 
 Warning: curl_multi_exec(): CURLOPT_FILE resource has gone away, resetting to default in %s on line %d
-Hello World!
-Hello World!Hello World!
-Hello World!Ok for CURLOPT_FILE
+%AOk for CURLOPT_FILE
 
 Warning: curl_multi_exec(): CURLOPT_INFILE resource has gone away, resetting to default in %s on line %d