changed to avoid compiler warning in visual studio

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402343

dlib/matrix/matrix.h

@@ -1347,7 +1347,7 @@ namespace dlib
     )
     {
         typedef matrix_mulscal_exp<matrix_exp<EXP>,float >  exp;
-        return matrix_exp<exp>(exp(m,1.0/s));
+        return matrix_exp<exp>(exp(m,1/s));
     }
 
     template <

dlib/svm/kcentroid.h

@@ -110,7 +110,7 @@ namespace dlib
         )
         {
             ++samples_seen;
-            const scalar_type xscale = 1.0/samples_seen;
+            const scalar_type xscale = 1/samples_seen;
             const scalar_type cscale = 1-xscale;
             train_and_maybe_test(x,cscale,xscale,false);
         }