CPP: Update for changes in EDG IL.

Author: Matthew Gretton-Dann

cpp/ql/test/library-tests/ir/ir/PrintAST.expected

@@ -5753,9 +5753,9 @@ ir.cpp:
 #  851|       0: [VariableDeclarationEntry] definition of d
 #  851|           Type = [Struct] PolymorphicDerived
 #  851|         init: [Initializer] initializer for d
-#  851|           expr: [ConstructorCall] call to PolymorphicDerived
-#  851|               Type = [VoidType] void
-#  851|               ValueCategory = prvalue
+#-----|           expr: [ConstructorCall] call to PolymorphicDerived
+#-----|               Type = [VoidType] void
+#-----|               ValueCategory = prvalue
 #  853|     2: [DeclStmt] declaration
 #  853|       0: [VariableDeclarationEntry] definition of pb
 #  853|           Type = [PointerType] PolymorphicBase *

cpp/ql/test/library-tests/ir/ir/raw_ir.expected

@@ -4217,10 +4217,10 @@ ir.cpp:
 #-----|     mu0_4(PolymorphicBase)              = ^IndirectMayWriteSideEffect[-1]     : &:r850_1
 #  851|     r851_1(glval<PolymorphicDerived>)   = VariableAddress[d]                  : 
 #  851|     mu851_2(PolymorphicDerived)         = Uninitialized[d]                    : &:r851_1
-#  851|     r851_3(glval<unknown>)              = FunctionAddress[PolymorphicDerived] : 
-#  851|     v851_4(void)                        = Call                                : func:r851_3, this:r851_1
-#  851|     mu851_5(unknown)                    = ^CallSideEffect                     : ~mu849_3
-#  851|     mu851_6(PolymorphicDerived)         = ^IndirectMayWriteSideEffect[-1]     : &:r851_1
+#-----|     r0_5(glval<unknown>)                = FunctionAddress[PolymorphicDerived] : 
+#-----|     v0_6(void)                          = Call                                : func:r0_5, this:r851_1
+#-----|     mu0_7(unknown)                      = ^CallSideEffect                     : ~mu849_3
+#-----|     mu0_8(PolymorphicDerived)           = ^IndirectMayWriteSideEffect[-1]     : &:r851_1
 #  853|     r853_1(glval<PolymorphicBase *>)    = VariableAddress[pb]                 : 
 #  853|     r853_2(glval<PolymorphicBase>)      = VariableAddress[b]                  : 
 #  853|     r853_3(PolymorphicBase *)           = CopyValue                           : r853_2