Fixes UDF format bug and ncdump bug

[captainkirk99]

Fixes #3411
Fixes #3410

Fixes are simple, testing is a pain but is done.

[captainkirk99]

THis fix works. With it installed, I can ncdump a GeoTIFF file with -s:

$ ncdump -hs ABBA_2022_C61_HNL.tif 
TIFFReadDirectory: Warning, Unknown field with tag 42112 (0xa480) encountered.
TIFFReadDirectory: Warning, Unknown field with tag 42113 (0xa481) encountered.netcdf ABBA_2022_C61_HNL {
dimensions:
	x = 55877 ;
	y = 41013 ;
	bnds = 2 ;
variables:
	ubyte data(y, x) ;
		data :grid_mapping = "crs" ;
		data :coordinates = "x y" ;
		data:_Storage = "contiguous" ;
	int crs ;
		crs:grid_mapping_name = "sinusoidal" ;
		crs:semi_major_axis = 6371007.181 ;
		crs:_Storage = "contiguous" ;
	double x(x) ;
		x:standard_name = "projection_x_coordinate" ;
		x:long_name = "x coordinate of projection" ;
		x:units = "m" ;
		x:axis = "X" ;
		x:bounds = "x_bnds" ;
		x:_Storage = "contiguous" ;
	double y(y) ;
		y:standard_name = "projection_y_coordinate" ;
		y:long_name = "y coordinate of projection" ;
		y:units = "m" ;
		y:axis = "Y" ;
		y:bounds = "y_bnds" ;
		y:_Storage = "contiguous" ;
	double x_bnds(x, bnds) ;
		x_bnds:_Storage = "contiguous" ;
	double y_bnds(y, bnds) ;
		y_bnds:_Storage = "contiguous" ;

// global attributes:
		:_Format = "user-defined format" ;
}