bitbake: bitbake-diffsigs: Use 4 spaces as indent for recursecb

It used 2 spaces as indent which wasn't clear enough, and might cause
confusions, people might think it was in wrong format.

Fixed:
$ bitbake bc-native -ccleansstate -Snone
$ bitbake bc-native -ccleansstate -Snone
$ bitbake-diffsigs tmp/stamps/x86_64-linux/bc-native/1.07.1-r0.do_cleansstate.sigdata.*

* Before:
Hash for dependent task bc/bc_1.07.1.bb.do_clean:virtual:native changed from [foo]
  Taint (by forced/invalidated task) changed from [foo]
Taint (by forced/invalidated task) changed from [foo]

* Now
Hash for dependent task bc/bc_1.07.1.bb.do_clean:virtual:native changed from [foo]
    Taint (by forced/invalidated task) changed from [foo]
Taint (by forced/invalidated task) changed from [foo]

(Bitbake rev: 5127a8d8e6d53f5f43a6ada7fd09b6b0c24ae989)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/bitbake/bin/bitbake-diffsigs b/bitbake/bin/bitbake-diffsigs
index fa430bb3b3..73229b7735 100755
--- a/bitbake/bin/bitbake-diffsigs
+++ b/bitbake/bin/bitbake-diffsigs
@@ -105,7 +105,7 @@ def recursecb(key, hash1, hash2):
         out2 = bb.siggen.compare_sigfiles(hashfiles[hash1], hashfiles[hash2], recursecb, color=color)
         for change in out2:
             for line in change.splitlines():
-                recout.append('  ' + line)
+                recout.append('    ' + line)
 
     return recout