resolve malloc nullptr dereference problem

Change-Id: I76f0d453e0300138100f56c4c7ce02178ca0af83

diff --git a/base/fota_png.c b/base/fota_png.c
index 18c59838b4454b6ef3a2cf8155a47e49b37bab8b..89ba4d11884b2406a4e2e5fd9f53cde3ab4421fe 100644 (file)
--- a/base/fota_png.c
+++ b/base/fota_png.c
@@ -146,6 +146,11 @@ int read_png_file(char *file_name)
        png_size_t row_size = 0;
 
        row_pointers = (png_bytep *) malloc(sizeof(png_bytep)*png_img_height);
+       if(row_pointers == NULL)
+       {
+               fclose(fp);
+               return -1;
+       }
        for (y = 0; y < png_img_height; y++) {
                row_size = png_get_rowbytes(png_ptr, info_ptr);
                row_pointers[y] = (png_byte *) malloc(row_size);