Bug 1275240 - Fix the type of parameter redeclaration from TypeError to SyntaxError. r=shu

js/src/js.msg

@@ -296,7 +296,7 @@ MSG_DEF(JSMSG_PAREN_IN_PAREN,          0, JSEXN_SYNTAXERR, "missing ) in parenth
 MSG_DEF(JSMSG_RC_AFTER_EXPORT_SPEC_LIST, 0, JSEXN_SYNTAXERR, "missing '}' after export specifier list")
 MSG_DEF(JSMSG_RC_AFTER_IMPORT_SPEC_LIST, 0, JSEXN_SYNTAXERR, "missing '}' after module specifier list")
 MSG_DEF(JSMSG_REDECLARED_CATCH_IDENTIFIER, 1, JSEXN_SYNTAXERR, "redeclaration of identifier '{0}' in catch")
-MSG_DEF(JSMSG_REDECLARED_PARAM,        1, JSEXN_TYPEERR, "redeclaration of formal parameter {0}")
+MSG_DEF(JSMSG_REDECLARED_PARAM,        1, JSEXN_SYNTAXERR, "redeclaration of formal parameter {0}")
 MSG_DEF(JSMSG_RESERVED_ID,             1, JSEXN_SYNTAXERR, "{0} is a reserved identifier")
 MSG_DEF(JSMSG_REST_WITH_DEFAULT,       0, JSEXN_SYNTAXERR, "rest parameter may not have a default")
 MSG_DEF(JSMSG_SELFHOSTED_TOP_LEVEL_LEXICAL, 1, JSEXN_SYNTAXERR, "self-hosted code cannot contain top-level {0} declarations")

js/src/tests/js1_8_1/regress/regress-452498-092.js

@@ -22,7 +22,7 @@ function test()
 
 // ------- Comment #92 From Jesse Ruderman
 
-  expect = 'TypeError: redeclaration of formal parameter e';
+  expect = 'SyntaxError: redeclaration of formal parameter e';
   try
   {
     eval('(function (e) { var e; const e = undefined; });');
@@ -31,8 +31,8 @@ function test()
   {
     actual = ex + '';
   }
-// Without patch: "TypeError: redeclaration of var e"
-// expected new behavior // With patch:    "TypeError: redeclaration of formal parameter e:"
+// Without patch: "SyntaxError: redeclaration of var e"
+// expected new behavior // With patch:    "SyntaxError: redeclaration of formal parameter e:"
 
   reportCompare(expect, actual, summary);