Apply batched suggestions from code review

C++: Accept Copilot suggestion

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: MathiasVP

cpp/ql/lib/semmle/code/cpp/ir/implementation/aliased_ssa/Instruction.qll

@@ -1750,7 +1750,7 @@ class CallInstruction extends Instruction {
   /**
    * Gets the number of positional arguments of the call.
    */
-  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgument()) }
+  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgumentOperand()) }
 
   /**
    * Holds if the result is a side effect for the argument at the specified index, or `this` if

cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/Instruction.qll

@@ -1750,7 +1750,7 @@ class CallInstruction extends Instruction {
   /**
    * Gets the number of positional arguments of the call.
    */
-  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgument()) }
+  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgumentOperand()) }
 
   /**
    * Holds if the result is a side effect for the argument at the specified index, or `this` if

cpp/ql/lib/semmle/code/cpp/ir/implementation/unaliased_ssa/Instruction.qll

@@ -1750,7 +1750,7 @@ class CallInstruction extends Instruction {
   /**
    * Gets the number of positional arguments of the call.
    */
-  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgument()) }
+  final int getNumberOfPositionalArguments() { result = count(this.getAPositionalArgumentOperand()) }
 
   /**
    * Holds if the result is a side effect for the argument at the specified index, or `this` if