Simplify two regexes by removing unnecessary \?-> and ensure related tests follow WP coding standards

Author: rodrigoprimo

WordPress/Sniffs/WP/AlternativeFunctionsSniff.php

@@ -283,7 +283,7 @@ public function process_matched_token( $stackPtr, $group_name, $matched_content
 				}
 
 				$contains_wp_path_constant = preg_match(
-					'`(?<!\?->|->|::)\b(?:ABSPATH|WP_(?:CONTENT|PLUGIN)_DIR|WPMU_PLUGIN_DIR|TEMPLATEPATH|STYLESHEETPATH|(?:MU)?PLUGINDIR)\b`',
+					'`(?<!->|::)\b(?:ABSPATH|WP_(?:CONTENT|PLUGIN)_DIR|WPMU_PLUGIN_DIR|TEMPLATEPATH|STYLESHEETPATH|(?:MU)?PLUGINDIR)\b`',
 					$filename_param['clean']
 				);
 				if ( 1 === $contains_wp_path_constant ) {
@@ -292,7 +292,7 @@ public function process_matched_token( $stackPtr, $group_name, $matched_content
 				}
 
 				$contains_wp_path_function_call = preg_match(
-					'`(?<!\?->|->|::)(?:get_home_path|plugin_dir_path|get_(?:stylesheet|template)_directory|wp_upload_dir)\s*\(`i',
+					'`(?<!->|::)(?:get_home_path|plugin_dir_path|get_(?:stylesheet|template)_directory|wp_upload_dir)\s*\(`i',
 					$filename_param['clean']
 				);
 				if ( 1 === $contains_wp_path_function_call ) {

WordPress/Tests/WP/AlternativeFunctionsUnitTest.inc

@@ -161,9 +161,9 @@ namespace\Sub\strip_tags( $string );
  * Safeguard that the sniff does not incorrectly ignore class methods/constants with the same
  * name as WordPress global functions/constants when used in file_get_contents().
  */
-file_get_contents(MyClass::wp_upload_dir() . 'subdir/file.inc');
-file_get_contents($this->GET_HOME_PATH() . 'subdir/file.inc');
-file_get_contents($this?->plugin_dir_path() . 'subdir/file.inc');
-file_get_contents(MyClass::ABSPATH . 'subdir/file.inc');
-file_get_contents($this->WPMU_PLUGIN_DIR . 'subdir/file.inc');
-file_get_contents($this?->TEMPLATEPATH . 'subdir/file.inc');
+file_get_contents( MyClass::wp_upload_dir() . 'subdir/file.inc' );
+file_get_contents( $this->GET_HOME_PATH() . 'subdir/file.inc' );
+file_get_contents( $this?->plugin_dir_path() . 'subdir/file.inc' );
+file_get_contents( MyClass::ABSPATH . 'subdir/file.inc' );
+file_get_contents( $this->WPMU_PLUGIN_DIR . 'subdir/file.inc' );
+file_get_contents( $this?->TEMPLATEPATH . 'subdir/file.inc' );