correct CHECKs for field coding in VideoIOYuv

Both fields are required to have the same dimensions for being combined into one picture again. The checks fail, if the dimensions are the same, so they need to be inverted.

source/Lib/Utilities/VideoIOYuv.cpp

@@ -1146,9 +1146,9 @@ bool VideoIOYuv::write( const CPelUnitBuf& picTop, const CPelUnitBuf& picBottom,
     const uint32_t    width444   = areaTopY.width  - (confLeft + confRight);
     const uint32_t    height444  = areaTopY.height - (confTop + confBottom);
 
-    CHECK(areaTop.width  == areaBottom.width , "Incompatible formats");
-    CHECK(areaTop.height == areaBottom.height, "Incompatible formats");
-    CHECK(areaTop.stride == areaBottom.stride, "Incompatible formats");
+    CHECK(areaTop.width  != areaBottom.width , "Incompatible formats");
+    CHECK(areaTop.height != areaBottom.height, "Incompatible formats");
+    CHECK(areaTop.stride != areaBottom.stride, "Incompatible formats");
 
     if ((width444 == 0) || (height444 == 0))
     {