Dr Memory Leak - C - malloc 3d array

Question

I am using Dr. Memory to debug legacy code that is crashing in certain conditions.

Dr. Memory says there is a memory leak during allocation:

float   ***in_vol=NULL;
in_vol=(float ***) malloc(inimsize[12]*sizeof(float **)); // here **
                   // inimsize is array of ints
 for (i0=0;i0<inimsize[12];i0++) {
   in_vol[i0] =(float **) malloc(inimsize[0]*sizeof(float *));

   for (i1=0;i1<inimsize[0];i1++)  {
      in_vol[i0][i1]=(float *) malloc(inimsize[1]*sizeof(float ));
   }
 }

The memory is later freed:

for (i0=0;i0<in_header[0][12];i0++) {
  for (i1=0;i1<in_header[0][0];i1++)  {
    free( (float*) *(*(in_vol+i0)+i1) );

  }
    free( (float*)  *(in_vol+i0));
}

free( (float*)in_vol); 
in_vol=NULL;

I do not see the problem, however, I am running out of memory during some tests.

Are the allocation and freeing correct?