C++: Accept test changes.

Author: MathiasVP

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

@@ -3706,9 +3706,10 @@ ir.c:
 #   88|     r88_3(int)        = Load[x1]            : &:r88_2, m84_6
 #   88|     r88_4(int)        = Constant[0]         : 
 #   88|     r88_5(bool)       = CompareEQ           : r88_3, r88_4
-#   88|     m88_6(int)        = Store[y]            : &:r88_1, r88_5
+#   88|     r88_6(int)        = Convert             : r88_5
+#   88|     m88_7(int)        = Store[y]            : &:r88_1, r88_6
 #   89|     r89_1(glval<int>) = VariableAddress[y]  : 
-#   89|     r89_2(int)        = Load[y]             : &:r89_1, m88_6
+#   89|     r89_2(int)        = Load[y]             : &:r89_1, m88_7
 #   89|     r89_3(int)        = Constant[0]         : 
 #   89|     r89_4(bool)       = CompareNE           : r89_2, r89_3
 #   89|     v89_5(void)       = ConditionalBranch   : r89_4
@@ -3721,7 +3722,7 @@ ir.c:
 
 #   90|   Block 6
 #   90|     r90_1(glval<int>) = VariableAddress[y] : 
-#   90|     r90_2(int)        = Load[y]            : &:r90_1, m88_6
+#   90|     r90_2(int)        = Load[y]            : &:r90_1, m88_7
 #   90|     r90_3(int)        = Constant[0]        : 
 #   90|     r90_4(bool)       = CompareEQ          : r90_2, r90_3
 #   90|     v90_5(void)       = ConditionalBranch  : r90_4

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

@@ -3343,7 +3343,8 @@ ir.c:
 #   88|     r88_3(int)        = Load[x1]            : &:r88_2, ~m?
 #   88|     r88_4(int)        = Constant[0]         : 
 #   88|     r88_5(bool)       = CompareEQ           : r88_3, r88_4
-#   88|     mu88_6(int)       = Store[y]            : &:r88_1, r88_5
+#   88|     r88_6(int)        = Convert             : r88_5
+#   88|     mu88_7(int)       = Store[y]            : &:r88_1, r88_6
 #   89|     r89_1(glval<int>) = VariableAddress[y]  : 
 #   89|     r89_2(int)        = Load[y]             : &:r89_1, ~m?
 #   89|     r89_3(int)        = Constant[0]         :