Fix 2-mandatory-debug/1.js: put return value on the same line

Author: lamlakamana-oss

Sprint-3/2-mandatory-debug/1.js

@@ -1,13 +1,19 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// I predict it will print "The sum of 10 and 32 is undefined", because
+// the function returns before it reaches a + b.
 
 function sum(a, b) {
-  return;
-  a + b;
+  return a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// The return statement was on its own line with nothing after it, so the
+// function returned undefined straight away. JavaScript treats the line
+// break after return as the end of the statement, so a + b on the next
+// line was never reached.
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+// I moved a + b onto the same line as return: return a + b