Code cleanup

Remove redundent #if defs from code

modules/highgui/src/window.cpp

@@ -59,9 +59,7 @@ CV_IMPL void cvSetWindowProperty(const char* name, int prop_id, double prop_valu
             cvSetModeWindow_QT(name,prop_value);
         #elif defined(HAVE_WIN32UI)
             cvSetModeWindow_W32(name,prop_value);
-        #elif defined (HAVE_GTK)
-            cvSetModeWindow_GTK(name,prop_value);
-        #elif defined (HAVE_GTK3)
+        #elif defined (HAVE_GTK) | defined (HAVE_GTK3)
             cvSetModeWindow_GTK(name,prop_value);
         #elif defined (HAVE_CARBON)
             cvSetModeWindow_CARBON(name,prop_value);
@@ -100,9 +98,7 @@ CV_IMPL double cvGetWindowProperty(const char* name, int prop_id)
             return cvGetModeWindow_QT(name);
         #elif defined(HAVE_WIN32UI)
             return cvGetModeWindow_W32(name);
-        #elif defined (HAVE_GTK)
-            return cvGetModeWindow_GTK(name);
-        #elif defined (HAVE_GTK3)
+        #elif defined (HAVE_GTK) | defined(HAVE_GTK3)
             return cvGetModeWindow_GTK(name);
         #elif defined (HAVE_CARBON)
             return cvGetModeWindow_CARBON(name);
@@ -119,9 +115,7 @@ CV_IMPL double cvGetWindowProperty(const char* name, int prop_id)
             return cvGetPropWindow_QT(name);
         #elif defined(HAVE_WIN32UI)
             return cvGetPropWindowAutoSize_W32(name);
-        #elif defined (HAVE_GTK)
-            return cvGetPropWindowAutoSize_GTK(name);
-        #elif defined (HAVE_GTK3)
+        #elif defined (HAVE_GTK) | defined(HAVE_GTK3)
             return cvGetPropWindowAutoSize_GTK(name);
         #else
             return -1;
@@ -134,9 +128,7 @@ CV_IMPL double cvGetWindowProperty(const char* name, int prop_id)
             return cvGetRatioWindow_QT(name);
         #elif defined(HAVE_WIN32UI)
             return cvGetRatioWindow_W32(name);
-        #elif defined (HAVE_GTK)
-            return cvGetRatioWindow_GTK(name);
-        #elif defined (HAVE_GTK3)
+        #elif defined (HAVE_GTK) | defined(HAVE_GTK3)
             return cvGetRatioWindow_GTK(name);
         #else
             return -1;
@@ -149,9 +141,7 @@ CV_IMPL double cvGetWindowProperty(const char* name, int prop_id)
             return cvGetOpenGlProp_QT(name);
         #elif defined(HAVE_WIN32UI)
             return cvGetOpenGlProp_W32(name);
-        #elif defined (HAVE_GTK)
-            return cvGetOpenGlProp_GTK(name);
-        #elif defined (HAVE_GTK3)
+        #elif defined (HAVE_GTK) | defined(HAVE_GTK3)
             return cvGetOpenGlProp_GTK(name);
         #else
             return -1;