lib: use strict equality comparison

Change '==' to '===' in v8_prof_polyfill.js, punycode.js.

PR-URL: #30898
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

Author: PW486

lib/internal/v8_prof_polyfill.js

@@ -41,7 +41,7 @@ const os = {
       // Filter out vdso and vsyscall entries.
       const arg = args[args.length - 1];
       if (arg === '[vdso]' ||
-          arg == '[vsyscall]' ||
+          arg === '[vsyscall]' ||
           /^[0-9a-f]+-[0-9a-f]+$/.test(arg)) {
         return '';
       }

lib/punycode.js

@@ -342,7 +342,7 @@ const encode = function(input) {
 			if (currentValue < n && ++delta > maxInt) {
 				error('overflow');
 			}
-			if (currentValue == n) {
+			if (currentValue === n) {
 				// Represent delta as a generalized variable-length integer.
 				let q = delta;
 				for (let k = base; /* no condition */; k += base) {
@@ -359,7 +359,7 @@ const encode = function(input) {
 				}
 
 				output.push(stringFromCharCode(digitToBasic(q, 0)));
-				bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
+				bias = adapt(delta, handledCPCountPlusOne, handledCPCount === basicLength);
 				delta = 0;
 				++handledCPCount;
 			}