removed unneeded test

lib/single-file/rules-matcher.js

@@ -130,19 +130,17 @@ this.RulesMatcher = this.RulesMatcher || (() => {
 				if (!ruleInfo) {
 					ruleInfo = { style: new Map(), matchedSelectors: new Set(), selectorsText: elementStyleInfo.selectorsText };
 				}
-				if (ruleInfo) {
-					if (elementStyleInfo.cssRule) {
-						ascendantMedia.rules.set(elementStyleInfo.cssRule, ruleInfo);
-					} else if (mediaInfo == allMediaInfo) {
-						allMediaInfo.styles.set(elementStyleInfo.cssStyle, ruleInfo);
-					}
-					if (elementStyleInfo.selectorText) {
-						ruleInfo.matchedSelectors.add(elementStyleInfo.selectorText);
-					}
-					const styleValue = ruleInfo.style.get(styleName);
-					if (!styleValue) {
-						ruleInfo.style.set(styleName, elementStyleInfo.styleValue);
-					}
+				if (elementStyleInfo.cssRule) {
+					ascendantMedia.rules.set(elementStyleInfo.cssRule, ruleInfo);
+				} else if (mediaInfo == allMediaInfo) {
+					allMediaInfo.styles.set(elementStyleInfo.cssStyle, ruleInfo);
+				}
+				if (elementStyleInfo.selectorText) {
+					ruleInfo.matchedSelectors.add(elementStyleInfo.selectorText);
+				}
+				const styleValue = ruleInfo.style.get(styleName);
+				if (!styleValue) {
+					ruleInfo.style.set(styleName, elementStyleInfo.styleValue);
 				}
 			});
 		});