NFIUnsatisfiedLinkError no longer inherits from UnsatisfiedLinkError

Author: eregon

src/main/java/org/truffleruby/language/loader/RequireNode.java

@@ -319,7 +319,7 @@ Object findFunctionInLibrary(Object library, String functionName, String path) {
     private void handleCExtensionException(String feature, Exception e) {
         TranslateExceptionNode.logJavaException(getContext(), this, e);
 
-        final UnsatisfiedLinkError linkErrorException = searchForException(UnsatisfiedLinkError.class, e);
+        final Throwable linkErrorException = searchForException("NFIUnsatisfiedLinkError", e);
         if (linkErrorException != null) {
             final String linkError = linkErrorException.getMessage();
 
@@ -363,17 +363,6 @@ private void handleCExtensionException(String feature, Exception e) {
         }
     }
 
-    private <T extends Throwable> T searchForException(Class<T> exceptionClass, Throwable exception) {
-        while (exception != null) {
-            if (exceptionClass.isInstance(exception)) {
-                return exceptionClass.cast(exception);
-            }
-            exception = exception.getCause();
-        }
-
-        return null;
-    }
-
     private Throwable searchForException(String exceptionClass, Throwable exception) {
         while (exception != null) {
             if (exception.getClass().getSimpleName().equals(exceptionClass)) {