CPP: Correct a few comments.

Author: geoffw0

cpp/ql/src/semmle/code/cpp/commons/Printf.qll

@@ -672,8 +672,8 @@ class FormatLiteral extends Literal {
   /**
    * Gets the char type required by the nth conversion specifier.
    *  - in the base case this is the default for the formatting function
-   *    (e.g. `char` for `printf`, `wchar_t` for `wprintf`).
-   *  - the `%C` format character reverses wideness on some platforms.
+   *    (e.g. `char` for `printf`, `char` or `wchar_t` for `wprintf`).
+   *  - the `%C` format character reverses wideness.
    *  - the size prefixes 'l'/'w' and 'h' override the type character
    *    to wide or single-byte characters respectively.
    */
@@ -719,7 +719,7 @@ class FormatLiteral extends Literal {
   /**
    * Gets the string type required by the nth conversion specifier.
    *  - in the base case this is the default for the formatting function
-   *    (e.g. `char` for `printf`, `wchar_t` for `wprintf`).
+   *    (e.g. `char *` for `printf`, `char *` or `wchar_t *` for `wprintf`).
    *  - the `%S` format character reverses wideness on some platforms.
    *  - the size prefixes 'l'/'w' and 'h' override the type character
    *    to wide or single-byte characters respectively.

cpp/ql/src/semmle/code/cpp/models/interfaces/FormattingFunction.qll

@@ -66,7 +66,7 @@ abstract class FormattingFunction extends Function {
    * Gets the character type used in the format string for this function.
    */
   Type getFormatCharType() {
-    result =  
+    result =
       stripTopLevelSpecifiersOnly(
         stripTopLevelSpecifiersOnly(
           getParameter(getFormatParameterIndex()).getType().getUnderlyingType()