[build][performance] fix Windows run

build.gradle

@@ -318,8 +318,9 @@ task performance(type: GradleBuild) {
     tasks = ['build', 'bench']
 
     doFirst {
-        startParameter.projectProperties['konanPluginClasspath'] =
-                project(':tools:kotlin-native-gradle-plugin').tasks.getByName('jar').archivePath.canonicalPath
+        startParameter.projectProperties = [
+                'konanPluginClasspath' : project(':tools:kotlin-native-gradle-plugin').tasks.getByName('jar').archivePath.canonicalPath,
+                'exe_suffix': TargetManager.host.getProgramSuffix()]
     }
 }
 

performance/build.gradle

@@ -79,7 +79,7 @@ private void dumpReport(String name, ByteArrayOutputStream output) {
 
 task konanRun(type: Exec) {
     def output = new ByteArrayOutputStream()
-    commandLine project.file("build/konan/bin/Ring.kexe").absolutePath, "$ringWarmup", "$iterations"
+    commandLine project.file("build/konan/bin/Ring.${gradle.startParameter.projectProperties.exe_suffix}").absolutePath, "$ringWarmup", "$iterations"
     standardOutput = output
     doLast {
         dumpReport('konanReport', output)