Modified ChromePhpHandler and FirePhpHandler to send no headers if no User-Agent is set

src/Monolog/Handler/ChromePHPHandler.php

@@ -155,8 +155,11 @@ class ChromePHPHandler extends AbstractProcessingHandler
      */
     protected function headersAccepted()
     {
-        return !isset($_SERVER['HTTP_USER_AGENT'])
-               || preg_match('{\bChrome/\d+[\.\d+]*\b}', $_SERVER['HTTP_USER_AGENT']);
+        if (empty($_SERVER['HTTP_USER_AGENT'])) {
+            return false;
+        }
+
+        return preg_match('{\bChrome/\d+[\.\d+]*\b}', $_SERVER['HTTP_USER_AGENT']);
     }
 
     /**

src/Monolog/Handler/FirePHPHandler.php

@@ -155,9 +155,12 @@ class FirePHPHandler extends AbstractProcessingHandler
      */
     protected function headersAccepted()
     {
-        return !isset($_SERVER['HTTP_USER_AGENT'])
-               || preg_match('{\bFirePHP/\d+\.\d+\b}', $_SERVER['HTTP_USER_AGENT'])
-               || isset($_SERVER['HTTP_X_FIREPHP_VERSION']);
+        if (empty($_SERVER['HTTP_USER_AGENT'])) {
+            return false;
+        }
+
+        return preg_match('{\bFirePHP/\d+\.\d+\b}', $_SERVER['HTTP_USER_AGENT'])
+        || isset($_SERVER['HTTP_X_FIREPHP_VERSION']);
     }
 
     /**