Redundant getter/setter: reduce hightlight range to header

#KT-30559 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/RedundantGetterInspection.kt

@@ -10,15 +10,18 @@ import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElementVisitor
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.startOffset
 
 class RedundantGetterInspection : AbstractKotlinInspection(), CleanupLocalInspectionTool {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean, session: LocalInspectionToolSession): PsiElementVisitor {
         return propertyAccessorVisitor { accessor ->
+            val rangeInElement = accessor.namePlaceholder.textRange?.shiftRight(-accessor.startOffset) ?: return@propertyAccessorVisitor
             if (accessor.isRedundantGetter()) {
                 holder.registerProblem(
                     accessor,
                     "Redundant getter",
                     ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
+                    rangeInElement,
                     RemoveRedundantGetterFix()
                 )
             }

idea/src/org/jetbrains/kotlin/idea/inspections/RedundantSetterInspection.kt

@@ -11,15 +11,18 @@ import com.intellij.psi.PsiElementVisitor
 import org.jetbrains.kotlin.idea.references.mainReference
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.startOffset
 
 class RedundantSetterInspection : AbstractKotlinInspection(), CleanupLocalInspectionTool {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean, session: LocalInspectionToolSession): PsiElementVisitor {
         return propertyAccessorVisitor { accessor ->
+            val rangeInElement = accessor.namePlaceholder.textRange?.shiftRight(-accessor.startOffset) ?: return@propertyAccessorVisitor
             if (accessor.isRedundantSetter()) {
                 holder.registerProblem(
                     accessor,
                     "Redundant setter",
                     ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
+                    rangeInElement,
                     RemoveRedundantSetterFix()
                 )
             }

idea/testData/inspectionsLocal/redundantSetter/lowerVisibility1.kt

@@ -1,5 +1,5 @@
 // PROBLEM: none
 class Test {
     var x = 1
-        <caret>private set
+        private <caret>set
 }

idea/testData/inspectionsLocal/redundantSetter/lowerVisibility2.kt

@@ -1,5 +1,5 @@
 // PROBLEM: none
 class Test {
     internal var x = 1
-        <caret>private set
+        private <caret>set
 }

idea/testData/inspectionsLocal/redundantSetter/lowerVisibility3.kt

@@ -1,5 +1,5 @@
 // PROBLEM: none
 class Test {
     protected var x = 1
-        <caret>private set
+        private <caret>set
 }

idea/testData/inspectionsLocal/redundantSetter/sameVisibility1.kt

@@ -1,4 +1,4 @@
 class Test {
     internal var x = 1
-        <caret>internal set
+        internal <caret>set
 }

idea/testData/inspectionsLocal/redundantSetter/sameVisibility2.kt

@@ -1,4 +1,4 @@
 class Test {
     protected var x = 1
-        <caret>protected set
+        protected <caret>set
 }

idea/testData/inspectionsLocal/redundantSetter/sameVisibility3.kt

@@ -1,4 +1,4 @@
 class Test {
     private var x = 1
-        <caret>private set
+        private <caret>set
 }