Fix one crash in the compiler.

tests/co19/co19-leg.status

Index: tests/co19/co19-leg.status
===================================================================
--- tests/co19/co19-leg.status	(revision 4934)
+++ tests/co19/co19-leg.status	(working copy)
@@ -39,7 +39,6 @@
 [ $component == leg ]
 Language/10_Expressions/01_Constants_A16_t01: Crash # TODO(ahe): Investigate.
 Language/10_Expressions/01_Constants_A16_t02: Crash # TODO(ahe): Investigate.
-Language/10_Expressions/13_Function_Invocation/4_Function_Expression_Invocation_A05_t01: Crash # TODO(ahe): Investigate.
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A02_t04: Crash # TODO(ahe): Investigate.
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A03_t01: Crash # TODO(ahe): Investigate.
 Language/10_Expressions/14_Method_Invocation/3_Super_Invocation_A03_t02: Crash # TODO(ahe): Investigate.
@@ -316,6 +315,7 @@
 LangGuideTest/02_Language_Constructs/02_11_Exceptions/02_11_Exceptions_A04_t01: Fail # ReferenceError: trace is not defined
 Language/13_Types/4_Interface_Types_A12_t10: Fail # SyntaxError: Unexpected identifier
 Language/07_Classes/5_Constructors/1_Generative_Constructors_A01_t01: Fail # SyntaxError: Unexpected string
+Language/10_Expressions/13_Function_Invocation/4_Function_Expression_Invocation_A05_t01: Fail # Operator 'call' is not supported on closures.
 
 
 LangGuideTest/02_Language_Constructs/02_8_Static_Methods/02_8_Static_Methods_A02_t02: Fail # cannot resolve foo