CPP: Add (basic) qhelp.

cpp/ql/src/Likely Bugs/ContinueInFalseLoop.qhelp

@@ -0,0 +1,24 @@
+<!DOCTYPE qhelp PUBLIC
+  "-//Semmle//qhelp//EN"
+  "qhelp.dtd">
+<qhelp>
+
+
+<overview>
+<p>A <code>continue</code> statement only re-runs the loop if the loop-condition is true. Therefore using <code>continue</code> in a loop with a constant false condition will never cause the loop body to be re-run, which is is misleading.
+</p>
+
+</overview>
+<recommendation>
+
+<p>Replace the <code>continue</code> statement with a <code>break</code> statement if the intent is to break from the loop.
+</p>
+
+</recommendation>
+
+<references>
+<li>
+  Tutorialspoint - C Programming Language: <a href="https://www.tutorialspoint.com/cprogramming/c_continue_statement.htm">Continue Statement in C</a>
+</li>
+</references>
+</qhelp>