C++: Make cpp/comparison-with-wider-type visible

The results from this query look good on real-world projects, so let's
make it visible by default.

Author: jbj

change-notes/1.22/analysis-cpp.md

@@ -15,6 +15,7 @@
 | No space for zero terminator (`cpp/no-space-for-terminator`) | Fewer false positive results | False positives involving strings that are not null-terminated have been excluded. |
 | Suspicious pointer scaling (`cpp/suspicious-pointer-scaling`) | Lower precision | The precision of this query has been reduced to "medium". This coding pattern is used intentionally and safely in a number of real-world projects. Results are no longer displayed on LGTM unless you choose to display them. |
 | Non-constant format string (`cpp/non-constant-format`) | Fewer false positive results | Rewritten using the taint-tracking library. |
+| Comparison of narrow type with wide type in loop condition (`cpp/comparison-with-wider-type`) | Higher precision | The precision of this query has been increased to "high" as the alerts from this query have proved to be valuable on real-world projects. With this precision, results are now displayed by default on LGTM. |
 
 ## Changes to QL libraries
 

cpp/ql/src/Security/CWE/CWE-190/ComparisonWithWiderType.ql

@@ -5,14 +5,13 @@
  * @id cpp/comparison-with-wider-type
  * @kind problem
  * @problem.severity warning
- * @precision medium
+ * @precision high
  * @tags reliability
  *       security
  *       external/cwe/cwe-190
  *       external/cwe/cwe-197
  *       external/cwe/cwe-835
- * 
-*/
+ */
 
 import cpp
 import semmle.code.cpp.controlflow.Dominance