Cleanup: use 'u' prefixed integer types for brevity & cast style

To use function style cast '(unsigned char)x' can't be replaced by
'unsigned char(x)'.

source/blender/io/collada/collada_utils.cpp

@@ -66,7 +66,7 @@
 #include "ExportSettings.h"
 #include "collada_utils.h"
 
-float bc_get_float_value(const COLLADAFW::FloatOrDoubleArray &array, unsigned int index)
+float bc_get_float_value(const COLLADAFW::FloatOrDoubleArray &array, uint index)
 {
   if (index >= array.getValuesCount()) {
     return 0.0f;