Use loop to shorten code.

src/pio_server.c

@@ -684,15 +684,12 @@ writeNetCDFStreamParallel(size_t streamIdx,
         {
           gatherRedist = retained[varID].redist;
           varSize = retained[varID].sliceSize;
-          varChunk[0] = retained[varID].sliceExtent[0];
-          varChunk[1] = retained[varID].sliceExtent[1];
-          varChunk[2] = retained[varID].sliceExtent[2];
-          myChunk[0][0] = PPM_extent_start(varChunk[0]);
-          myChunk[0][1] = PPM_extent_end(  varChunk[0]);
-          myChunk[1][0] = PPM_extent_start(varChunk[1]);
-          myChunk[1][1] = PPM_extent_end(  varChunk[1]);
-          myChunk[2][0] = PPM_extent_start(varChunk[2]);
-          myChunk[2][1] = PPM_extent_end(  varChunk[2]);
+          for (size_t i = 0; i < 3; ++i)
+            {
+              varChunk[i] = retained[varID].sliceExtent[i];
+              myChunk[i][0] = PPM_extent_start(varChunk[i]);
+              myChunk[i][1] = PPM_extent_end(  varChunk[i]);
+            }
         }
       else
         {