Merge pull request #12058 from lucianpls/MRF_deflate_expansion

MRF: allow deflate expansion

When data is not compressible by DEFLATE, a slight increase happens, which is not an error. Output buffer overflow is not possible either, since DEFLATE is given the correct output buffer size available.

Author: lucianpls

frmts/mrf/mrf_band.cpp

@@ -281,13 +281,6 @@ static void *DeflateBlock(buf_mgr &src, size_t extrasize, int flags)
         CPLFree(dbuff);  // Safe to call with NULL
         return nullptr;
     }
-    if (dst.size > src.size)
-    {
-        CPLError(CE_Failure, CPLE_AppDefined,
-                 "DeflateBlock(): dst.size > src.size");
-        CPLFree(dbuff);  // Safe to call with NULL
-        return nullptr;
-    }
 
     // source size is used to hold the output size
     src.size = dst.size;