RMF: fix wrong counter decrement that caused compressed RMF to be inc…

…orrectly decompressed (spotted and bisected by drons, OSGeo/gdal#153) git-svn-id: https://svn.osgeo.org/gdal/trunk/gdal@35342 f0d54148-0727-0410-94bb-9a71ac55c965
aashish24 · Sep 6, 2016 · 4491841 · 4491841
1 parent 1bcb82f
commit 4491841
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/frmts/rmf/rmfdem.cpp b/frmts/rmf/rmfdem.cpp
@@ -158,7 +158,7 @@ int RMFDataset::DEMDecompress( const GByte* pabyIn, GUInt32 nSizeIn,
                     break;
                 if ( nSizeOut < nCount )
                     break;
-                nSizeIn -= (nCount + 1) / 2;
+                nSizeIn -= nCount / 2;
                 nSizeOut -= nCount;
                 while ( nCount-- > 0 )
                 {
@@ -205,7 +205,7 @@ int RMFDataset::DEMDecompress( const GByte* pabyIn, GUInt32 nSizeIn,
                     break;
                 if ( nSizeOut < nCount )
                     break;
-                nSizeIn -= (3 * nCount + 1) / 2;
+                nSizeIn -= 3 * nCount / 2;
                 nSizeOut -= nCount;
 
                 while ( nCount-- > 0 )