Make it easier to read test cases by renaming a variable

Also improves a code comment in the test file

Author: rodrigoprimo

src/Standards/Generic/Tests/CodeAnalysis/JumbledIncrementerUnitTest.1.inc

@@ -37,12 +37,12 @@ for (; $i < 10; $i++) {
     }
 }
 
-for (; $i < 10; $i++) {
-    for ($j = 0;; $i++) {
+for (; $same < 10; $same++) {
+    for ($j = 0;; $same++) {
         if ($j > 5) {
             break;
         }
-        for (;; $i++) {
+        for (;; $same++) {
             if ($k > 5) {
                 break;
             }
@@ -55,19 +55,19 @@ for ($i = 0; $i < 20; $i++) :
     endfor;
 endfor;
 
-for ($i = 0; $i < 20; $i++) :
-    for ($j = 0; $j < 5; $i += 2) :
+for ($same = 0; $same < 20; $same++) :
+    for ($j = 0; $j < 5; $same += 2) :
     endfor;
 endfor;
 
-// Sniff bails early when there is no incrementor in the third expression of the outer for loop.
-for ($i = 0; $i < 10;) {
-    ++$i;
-    for ($j = 0; $j < 5; $i++) {}
+// Sniff bails early when the third expression of the outer for loop is empty.
+for ($same = 0; $same < 10;) {
+    ++$same;
+    for ($j = 0; $j < 5; $same++) {}
 }
 
-for ($i = 1, $j = 0; $i <= 10; $i++, $j++) {
-    for ($j = 0, $k = 0; $k < 5; $j++, $k++) {}
+for ($i = 1, $same = 0; $i <= 10; $i++, $same++) {
+    for ($same = 0, $k = 0; $k < 5; $same++, $k++) {}
 }
 
 for ($i = 20; $i > 0; $i--) {
@@ -76,8 +76,8 @@ for ($i = 20; $i > 0; $i--) {
     }
 }
 
-for ($i = 20; $i > 0; $i--) {
-    for ($j = 5; $j > 0; $i -= 2) {
-        for ($k = 3; $k > 0; $i--) {}
+for ($same = 20; $same > 0; $same--) {
+    for ($j = 5; $j > 0; $same -= 2) {
+        for ($k = 3; $k > 0; $same--) {}
     }
 }