Do not generate a compile-time error if there is more than one catch-all clause

tests/language/language_analyzer2.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 [ $compiler == dart2analyzer ]
 # Runtime negative test. No static errors or warnings.
 closure_call_wrong_argument_count_negative_test: skip
 
 # TBD: using built-in identifers
 built_in_identifier_prefix_test: fail # Issue 12694
@@ skipping 119 matching lines @@
 # test issue 11963, it is fine to access any property of the dynamic variable
 prefix6_negative_test: fail
 
 # test issue 11964, Any use of a malformed type gives rise to a static warning.
 prefix8_negative_test: fail
 prefix11_negative_test: fail
 
 # test issue 12156, fails only at runtime
 static_call_wrong_argument_count_negative_test: fail
 
-throw7_test/01: Fail # Issue 12159
-
 # test issue 12160, not annotated warnings for type variables from static member
 type_parameter_test/none: fail
 # test issue 12161, type variable in static, malformed type, static warning
 type_variable_static_context_negative_test: fail
 
 # test issue 12163, unresolved identifier is static warning in static context
 unresolved_in_factory_negative_test: fail # Issue 12163
 unresolved_top_level_var_negative_test: fail # Issue 12163
 
 # test issue 12191, ambiguous import is always warning now
@@ skipping 53 matching lines @@
 factory_redirection_test/09: fail
 factory_redirection_test/10: fail
 factory_redirection_test/11: fail
 factory_redirection_test/12: fail
 factory_redirection_test/13: fail
 factory_redirection_test/14: fail
 getters_setters2_test/03: fail
 type_variable_bounds3_test/00: fail
 type_variable_bounds2_test/05: fail