[CLEANUP] Avoid Hungarian notation for oSelector (#846)

Part of #756

Author: oliverklee

src/CSSList/CSSBlockList.php

@@ -100,9 +100,9 @@ protected function allSelectors(array &$result, $specificitySearch = null): void
         $aDeclarationBlocks = [];
         $this->allDeclarationBlocks($aDeclarationBlocks);
         foreach ($aDeclarationBlocks as $oBlock) {
-            foreach ($oBlock->getSelectors() as $oSelector) {
+            foreach ($oBlock->getSelectors() as $selector) {
                 if ($specificitySearch === null) {
-                    $result[] = $oSelector;
+                    $result[] = $selector;
                 } else {
                     $sComparator = '===';
                     $aSpecificitySearch = \explode(' ', $specificitySearch);
@@ -112,7 +112,7 @@ protected function allSelectors(array &$result, $specificitySearch = null): void
                         $iTargetSpecificity = $aSpecificitySearch[1];
                     }
                     $iTargetSpecificity = (int) $iTargetSpecificity;
-                    $iSelectorSpecificity = $oSelector->getSpecificity();
+                    $iSelectorSpecificity = $selector->getSpecificity();
                     $bMatches = false;
                     switch ($sComparator) {
                         case '<=':
@@ -132,7 +132,7 @@ protected function allSelectors(array &$result, $specificitySearch = null): void
                             break;
                     }
                     if ($bMatches) {
-                        $result[] = $oSelector;
+                        $result[] = $selector;
                     }
                 }
             }

src/RuleSet/DeclarationBlock.php

@@ -131,8 +131,8 @@ public function removeSelector($mSelector): bool
         if ($mSelector instanceof Selector) {
             $mSelector = $mSelector->getSelector();
         }
-        foreach ($this->aSelectors as $iKey => $oSelector) {
-            if ($oSelector->getSelector() === $mSelector) {
+        foreach ($this->aSelectors as $iKey => $selector) {
+            if ($selector->getSelector() === $mSelector) {
                 unset($this->aSelectors[$iKey]);
                 return true;
             }