Cleanup: Use lambda instead of function bind

More detailed explanation why it is a preferred way of coding
nowadays can be found at

https://clang.llvm.org/extra/clang-tidy/checks/modernize-avoid-bind.html

Resolves modernize-avoid-bind Clang-Tidy warning.

Differential Revision: https://developer.blender.org/D10320

.clang-tidy

@@ -40,7 +40,6 @@ Checks:  >
   -modernize-loop-convert,
   -modernize-pass-by-value,
   -modernize-raw-string-literal,
-  -modernize-avoid-bind,
 
 WarningsAsErrors: '*'
 CheckOptions: