fixup! program: Make start_sector unsigned in

patch.c

@@ -72,7 +72,7 @@ int patch_load(const char *patch_file)
 		patch->filename = attr_as_string(node, "filename", &errors);
 		patch->partition = attr_as_unsigned(node, "physical_partition_number", &errors);
 		patch->size_in_bytes = attr_as_unsigned(node, "size_in_bytes", &errors);
-		patch->start_sector = attr_as_string(node, "start_sector", &errors);
+		patch->start_sector = attr_as_unsigned(node, "start_sector", &errors);
 		patch->value = attr_as_string(node, "value", &errors);
 		patch->what = attr_as_string(node, "what", &errors);
 

patch.h

@@ -9,7 +9,7 @@ struct patch {
 	const char *filename;
 	unsigned partition;
 	unsigned size_in_bytes;
-	const char *start_sector;
+	unsigned start_sector;
 	const char *value;
 	const char *what;