Revert "Remove FX_Alloc() null checks now that it can't return NULL."

core/src/fxge/agg/agg23/fx_agg_rasterizer_scanline_aa.cpp

 
 //----------------------------------------------------------------------------
 // XYQ: 2006-01-22 Copied from AGG project.
 // This file uses only integer data, so it's suitable for all platforms.
 //----------------------------------------------------------------------------
 //----------------------------------------------------------------------------
 // Anti-Grain Geometry - Version 2.3
 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
 //
 // Permission to copy, use, modify, sell and distribute this software
@@ skipping 99 matching lines @@
     m_min_x =  0x7FFFFFFF;
     m_min_y =  0x7FFFFFFF;
     m_max_x = -0x7FFFFFFF;
     m_max_y = -0x7FFFFFFF;
 }
 void outline_aa::allocate_block()
 {
     if(m_cur_block >= m_num_blocks) {
         if(m_num_blocks >= m_max_blocks) {
             cell_aa** new_cells = FX_Alloc( cell_aa*, m_max_blocks + cell_block_pool);
+            if (!new_cells) {
+                return;
+            }
             if(m_cells) {
                 FXSYS_memcpy32(new_cells, m_cells, m_max_blocks * sizeof(cell_aa*));
                 FX_Free(m_cells);
             }
             m_cells = new_cells;
             m_max_blocks += cell_block_pool;
         }
         m_cells[m_num_blocks++] = FX_Alloc(cell_aa, cell_block_size);
+        if (!m_cells[m_num_blocks - 1]) {
+            return;
+        }
     }
     m_cur_cell_ptr = m_cells[m_cur_block++];
 }
 AGG_INLINE void outline_aa::add_cur_cell()
 {
     if(m_cur_cell.area | m_cur_cell.cover) {
         if((m_num_cells & cell_block_mask) == 0) {
             if(m_num_blocks >= cell_block_limit) {
                 return;
             }
@@ skipping 342 matching lines @@
     }
     for(i = 0; i < m_sorted_y.size(); i++) {
         const sorted_y& cur_y = m_sorted_y[i];
         if(cur_y.num) {
             qsort_cells(m_sorted_cells.data() + cur_y.start, cur_y.num);
         }
     }
     m_sorted = true;
 }
 }