Creating a new footprint with a space in the name causes crash

[ocb-hd-ccb]

```
Application: KiCad
Version: (5.99.0-158-g78859b29e), debug build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.64.1 SecureTransport (LibreSSL/2.8.3) zlib/1.2.11 nghttp2/1.39.2
Platform: Mac OS X (Darwin 19.0.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.4 (wchar_t,STL containers,compatible with 2.8)
    Boost: 1.69.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.54.0
    Compiler: Clang 9.0.0 with C++ ABI 1002

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON
    KICAD_STDLIB_DEBUG=OFF
    KICAD_STDLIB_LIGHT_DEBUG=OFF
    KICAD_SANITIZE=OFF
```
The description says it all. I don't think there should be spaces allowed but they should be blocked and not cause the whole thing to crash.

[Seth Hillbrand (sethh)]

This also affects 5.1.5

It doesn't crash right away but it allows the spaces and and then crashes when you try to edit the footprint properties.

[Seth Hillbrand (sethh)]

This was actually fixed in master already by JP (cee1873ffffef31446230f2bff8683a0e9b9e9ad). It's not the spaces that are the issue but the fact that you are creating a new footprint that isn't in the tree.

[ocb-hd-ccb (ocb-hd-ccb)]

I will check the new nightlies to see. I am able to creat new footprints just fine just crashed when ever I had a space in the name.

I will update tonight and check.