Check for function in %_CallFunction.

test/mjsunit/regress/regress-2285.js

Index: test/mjsunit/regress/regress-2285.js
diff --git a/test/mjsunit/regress/regress-1898.js b/test/mjsunit/regress/regress-2285.js
similarity index 93%
copy from test/mjsunit/regress/regress-1898.js
copy to test/mjsunit/regress/regress-2285.js
index 5440446fbf78ca593e8748cd54ea2aefad047542..efda4cde3256505c5b917b0bda22686c6abda565 100644
--- a/test/mjsunit/regress/regress-1898.js
+++ b/test/mjsunit/regress/regress-2285.js
@@ -27,11 +27,6 @@
 
 // Flags: --allow-natives-syntax
 
-function f(x) {
-  Math.log(Math.min(0.1, Math.abs(x)));
-}
+assertThrows(function() { %_CallFunction(null, 0, ""); });
+assertThrows(function() { %_CallFunction(null, 0, 1); });
 
-f(0.1);
-f(0.1);
-%OptimizeFunctionOnNextCall(f);
-f(0.1);