Fix implicit conversions.

* Also sizeof (char) == 1 by C language definition.

src/grid.c

@@ -1448,7 +1448,7 @@ gridInqXCvalsSerial(grid_t *gridptr, char **xcvals)
   const char **gridptr_xcvals = gridptr->vtable->inqXCvalsPtr(gridptr);
   if (gridptr_xcvals && size && xcvals)
     {
-      maxclength = gridptr->x.clength;
+      maxclength = (size_t) gridptr->x.clength;
       for (size_t i = 0; i < size; i++) memcpy(xcvals[i], gridptr_xcvals[i], maxclength * sizeof(char));
     }
 
@@ -1550,8 +1550,8 @@ gridInqYCvalsSerial(grid_t *gridptr, char **ycvals)
   const char **gridptr_ycvals = gridptr->vtable->inqYCvalsPtr(gridptr);
   if (gridptr_ycvals && size && ycvals)
     {
-      maxclength = gridptr->y.clength;
-      for (size_t i = 0; i < size; i++) memcpy(ycvals[i], gridptr_ycvals[i], maxclength * sizeof(char));
+      maxclength = (size_t) gridptr->y.clength;
+      for (size_t i = 0; i < size; i++) memcpy(ycvals[i], gridptr_ycvals[i], maxclength);
     }
 
   return (SizeType) maxclength;

src/zaxis.c

@@ -582,7 +582,7 @@ zaxisDefCvals(int zaxisID, const char **cvals, int clen)
   if (cvals && clen)
     {
       zaxis_t *zaxisptr = zaxis_to_pointer(zaxisID);
-      const size_t size = zaxisptr->size;
+      const size_t size = (size_t) zaxisptr->size;
       xassert(size);
 
       zaxisptr->clength = clen;
@@ -590,8 +590,8 @@ zaxisDefCvals(int zaxisID, const char **cvals, int clen)
 
       for (size_t ilev = 0; ilev < size; ++ilev)
         {
-          zaxisptr->cvals[ilev] = (char *) Malloc(clen * sizeof(char));
-          memcpy(zaxisptr->cvals[ilev], cvals[ilev], clen * sizeof(char));
+          zaxisptr->cvals[ilev] = (char *) Malloc(clen);
+          memcpy(zaxisptr->cvals[ilev], cvals[ilev], (size_t)clen);
         }
       reshSetStatus(zaxisID, &zaxisOps, RESH_DESYNC_IN_USE);
     }