Fixed typo that prevented gtSetup to run correctly

Signed-off-by: Nicola Vigano <nicola.vigano@esrf.fr>

git-svn-id: https://svn.code.sf.net/p/dct/code/trunk@145 4c865b51-4357-4376-afb4-474e03ccb993

zUtil_Parameters/gtAddMatFile.m

@@ -11,7 +11,7 @@ if ~exist('update','var') || isempty(update)
     update=false;
 end
 
-if ~exist('addmissing','var') || isempty(missing)
+if ~exist('missing','var') || isempty(missing)
     missing=false;
 end