core, irc, script: fix typos

src/core/wee-eval.c

@@ -1721,7 +1721,7 @@ eval_expression_condition (const char *expr,
 
     /*
      * evaluate sub-expressions between parentheses and replace them with their
-     * value
+     * values
      */
     while (expr2[0] == '(')
     {

src/core/wee-string.c

@@ -933,7 +933,7 @@ string_strip (const char *string, int left, int right, const char *chars)
 }
 
 /*
- * Converts escaped chars to their value.
+ * Converts escaped chars to their values.
  *
  * Following escaped chars are supported:
  *   \"         double quote