Make more JS files beter match the coding standard.

test/mjsunit/regexp-lookahead.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 122 matching lines @@
 testRE(re, "xz", false);
 execRE(re, "xy", ["", "x", "y"]);
 
 re = /^(?!(x)(?!(y)))/;
 testRE(re, "xy", true);
 testRE(re, "xz", false);
 execRE(re, "xy", ["", undefined, undefined]);
 
 re = /^(?=(x)(?!(y)))/;
 testRE(re, "xz", true);
-testRE(re, "xy", false)
+testRE(re, "xy", false);
 execRE(re, "xz", ["", "x", undefined]);
 
 re = /^(?!(x)(?=(y)))/;
 testRE(re, "xz", true);
 testRE(re, "xy", false);
 execRE(re, "xz", ["", undefined, undefined]);
 
 re = /^(?=(x)(?!(y)(?=(z))))/;
 testRE(re, "xaz", true);
 testRE(re, "xya", true);
 testRE(re, "xyz", false);
 testRE(re, "a", false);
 execRE(re, "xaz", ["", "x", undefined, undefined]);
 execRE(re, "xya", ["", "x", undefined, undefined]);
 
 re = /^(?!(x)(?=(y)(?!(z))))/;
 testRE(re, "a", true);
 testRE(re, "xa", true);
 testRE(re, "xyz", true);
 testRE(re, "xya", false);
 execRE(re, "a", ["", undefined, undefined, undefined]);
 execRE(re, "xa", ["", undefined, undefined, undefined]);
 execRE(re, "xyz", ["", undefined, undefined, undefined]);