Fix "Type mismatch: inferred type is String? but String was expected"

Author: woainikk

buildSrc/src/main/kotlin/CacheRedirector.kt

@@ -108,12 +108,12 @@ private fun Project.configureYarnAndNodeRedirects() {
     if (CacheRedirector.isEnabled) {
         val yarnRootExtension = extensions.findByType<YarnRootExtension>()
         if (yarnRootExtension != null) {
-            yarnRootExtension.downloadBaseUrl = CacheRedirector.maybeRedirect(yarnRootExtension.downloadBaseUrl)
+            yarnRootExtension.downloadBaseUrl = CacheRedirector.maybeRedirect(yarnRootExtension.downloadBaseUrl!!)
         }
 
         val nodeJsExtension = rootProject.extensions.findByType<NodeJsRootExtension>()
         if (nodeJsExtension != null) {
-            nodeJsExtension.nodeDownloadBaseUrl = CacheRedirector.maybeRedirect(nodeJsExtension.nodeDownloadBaseUrl)
+            nodeJsExtension.nodeDownloadBaseUrl = CacheRedirector.maybeRedirect(nodeJsExtension.nodeDownloadBaseUrl!!)
         }
     }
 }