Optimize processing of inspection descriptions

src/main/kotlin/com/chylex/intellij/inspectionlens/LensRenderer.kt

@@ -42,13 +42,23 @@ class LensRenderer(info: HighlightInfo) : HintRenderer(null) {
 		private val ATTRIBUTES_SINGLETON = TextAttributes(null, null, null, null, Font.ITALIC)
 		
 		private fun getValidDescriptionText(text: String?): String {
-			return if (text.isNullOrBlank()) " " else addMissingPeriod(StringUtil.unescapeXmlEntities(StringUtil.stripHtml(text, " ")))
+			return if (text.isNullOrBlank()) " " else addMissingPeriod(convertHtmlToText(text))
+		}
+		
+		private fun convertHtmlToText(potentialHtml: String): String {
+			return potentialHtml
+				.ifContains('<') { StringUtil.stripHtml(it, " ") }
+				.ifContains('&', StringUtil::unescapeXmlEntities)
 		}
 		
 		private fun addMissingPeriod(text: String): String {
 			return if (text.endsWith('.')) text else "$text."
 		}
 		
+		private inline fun String.ifContains(charToTest: Char, action: (String) -> String): String {
+			return if (this.contains(charToTest)) action(this) else this
+		}
+		
 		private fun fixBaselineForTextRendering(rect: Rectangle) {
 			rect.y += 1
 		}