DataVariable type references not properly updated after undefining child types

[op2786]

Version and Platform (required):

• Binary Ninja Version: 4.0.4836-dev, df4290fd
• OS: macos
• OS Version: 14.3
• CPU Architecture: arm64

Steps To Reproduce:

1. Open the attached binary

2. Navigate to adress 100007a53

3. Select two lines and create a structure using the S shortcut to generate a dummy structure named struct_1

4. Convert that structure to a structure array with two items You should get something like:

5. Open types sidebar and undefine struct_1

6. Observe the crash

Additional Information: ls.zip

[plafosse]

I pushed a fix for this crash but it points to a larger issue that needs to be handled, were we're not properly fixing up the data variable afterward. I'm going to change this other problem.