Added #include <limits> to files that were missing it.

modules/calib3d/src/circlesgrid.cpp

@@ -41,6 +41,7 @@
  //M*/
 
 #include "circlesgrid.hpp"
+#include <limits>
 //#define DEBUG_CIRCLES
 
 #ifdef DEBUG_CIRCLES

modules/contrib/src/facerec.cpp

@@ -17,6 +17,7 @@
  */
 #include "precomp.hpp"
 #include <set>
+#include <limits>
 
 namespace cv
 {

modules/features2d/src/blobdetector.cpp

@@ -42,6 +42,7 @@
 
 #include "precomp.hpp"
 #include <iterator>
+#include <limits>
 
 //#define DEBUG_BLOB_DETECTOR
 

modules/features2d/src/descriptors.cpp

@@ -40,6 +40,7 @@
 //M*/
 
 #include "precomp.hpp"
+#include <limits>
 
 namespace cv
 {

modules/features2d/src/matchers.cpp

@@ -40,6 +40,7 @@
 //M*/
 
 #include "precomp.hpp"
+#include <limits>
 
 #if defined(HAVE_EIGEN) && EIGEN_WORLD_VERSION == 2
 #include <Eigen/Array>

modules/features2d/src/mser.cpp

@@ -41,6 +41,7 @@
 
 #include "precomp.hpp"
 #include "opencv2/imgproc/imgproc_c.h"
+#include <limits>
 
 namespace cv
 {