Align writer to 4-byte boundary after every blob instead of after fin…

…alizing an image that could contain multiple blobs

src/blob.rs

@@ -89,6 +89,10 @@ impl Blob {
         section_header.to_writer(writer)?;
         writer.physical_seek(end_offset)?;
 
+        writer
+            .align()
+            .write_err("Failed to align writer on next 4-byte offset after writing blob section")?;
+
         Ok(Self {
             offset: start_offset,
             length,

src/image_writer.rs

@@ -1,4 +1,3 @@
-use crate::error::Converter;
 use crate::paged_writer::PagedWriter;
 use crate::Blob;
 use crate::CylindricalImage;
@@ -243,10 +242,6 @@ impl<'a, T: Read + Write + Seek> ImageWriter<'a, T> {
         // Add metadata for XML generation later, when the file is completed.
         self.images.push(self.image.clone());
 
-        self.writer
-            .align()
-            .write_err("Failed to align writer on next 4-byte offset after writing data packet")?;
-
         Ok(())
     }
 }