BLI: slight Vector move constructor improvement

`OtherInlineBufferCapacity <= InlineBufferCapacity` implies
`size <= InlineBufferCapacity` and can be done at compile time.

So if that is true already (as it commonly is), the `else` branch
is not necessary. This can improve performance in theory, although
I couldn't measure that in practice.

Additionally, this change also reduces the binary size (because of the
omitted else branch). Since this code is inlined fairly often, the impact
is measurable: the binary size is reduced by 50kb.

source/blender/blenlib/BLI_vector.hh

@@ -243,7 +243,9 @@ class Vector {
     const int64_t size = other.size();
 
     if (other.is_inline()) {
-      if (size <= InlineBufferCapacity) {
+      /* This first check is not strictly necessary, but improves performance because it can be
+       * done at compile time and makes the size check at run-time unnecessary. */
+      if (OtherInlineBufferCapacity <= InlineBufferCapacity || size <= InlineBufferCapacity) {
         /* Copy between inline buffers. */
         uninitialized_relocate_n(other.begin_, size, begin_);
         end_ = begin_ + size;