pstore: Fix sprintf format specifier in pstore_dump()

We should use sprintf format specifier "%u" instead of "%d" for
argument of type 'unsigned int' in pstore_dump().
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>

fs/pstore/platform.c

@@ -301,7 +301,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 
 		if (big_oops_buf) {
 			dst = big_oops_buf;
-			hsize = sprintf(dst, "%s#%d Part%d\n", why,
+			hsize = sprintf(dst, "%s#%d Part%u\n", why,
 							oopscount, part);
 			size = big_oops_buf_sz - hsize;
 
@@ -321,7 +321,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 			}
 		} else {
 			dst = psinfo->buf;
-			hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount,
+			hsize = sprintf(dst, "%s#%d Part%u\n", why, oopscount,
 									part);
 			size = psinfo->bufsize - hsize;
 			dst += hsize;