pipeReadPipeRecord: changed type of datasize to size_t.

src/cdo.cc

@@ -920,6 +920,7 @@ void print_system_info()
 #endif 
   fprintf(stderr, "\n");
 
+  fprintf(stderr, "sizeof(size_t)      = %zu\n", sizeof(size_t));
   fprintf(stderr, "mem alignment       = %d\n\n", getMemAlignment());
 
 #if defined(HAVE_MMAP)

src/pipe.cc

@@ -407,7 +407,7 @@ pipe_t::pipeReadPipeRecord(double *p_data, int vlistID, size_t *p_nmiss)
   if (!p_data)
     Error("No data pointer for %s", name.c_str());
 
-  int datasize = gridInqSize(vlistInqVarGrid(vlistID, varID));
+  size_t datasize = gridInqSize(vlistInqVarGrid(vlistID, varID));
   nvals += datasize;
   if (vlistNumber(vlistID) != CDI_REAL)
     datasize *= 2;