[SYCL][ESIMD] Fix compilation error in linear.cpp (#45)

Author: DenisBakhvalov

SYCL/ESIMD/linear/bitmap_helpers.h

@@ -256,8 +256,8 @@ __SYCL_INLINE_NAMESPACE(cl) {
       width = abs(*(short *)&header_out[18]);
       height = abs(*(short *)&header_out[22]);
 
-      img_out = (unsigned char *)malloc(width * height * 3);
-      img_gold = (unsigned char *)malloc(width * height * 3);
+      img_out = (unsigned char *)std::malloc(width * height * 3);
+      img_gold = (unsigned char *)std::malloc(width * height * 3);
 
       if (fread(img_out, 1, width * height * 3, f_out) != width * height * 3) {
         perror(f_out_str);