Coding Standards: Rename the $processedHeaders variable to `$proces…

…sed_headers` in `WP_Http::request()`.

This fixes a `Variable "$processedHeaders" is not in valid snake_case format` WPCS warning.

Follow-up to [8620], [51823].

See #53359.

git-svn-id: https://develop.svn.wordpress.org/trunk@51826 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-http.php

@@ -309,8 +309,8 @@ public function request( $url, $args = array() ) {
 
 		// WP allows passing in headers as a string, weirdly.
 		if ( ! is_array( $parsed_args['headers'] ) ) {
-			$processedHeaders       = WP_Http::processHeaders( $parsed_args['headers'] );
-			$parsed_args['headers'] = $processedHeaders['headers'];
+			$processed_headers      = WP_Http::processHeaders( $parsed_args['headers'] );
+			$parsed_args['headers'] = $processed_headers['headers'];
 		}
 
 		// Setup arguments.