bitbake: siggen: Minor code improvement

Tweak the code to remove duplication and only set if the attribute isn't
already there to avoid overwriting.

(Bitbake rev: 513e6c4e9233e0d0bc31e1169077fdbf9aaf4ec3)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index f551c74890..0e79404f76 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -273,11 +273,11 @@ class SignatureGeneratorBasic(SignatureGenerator):
         super().setup_datacache_from_datastore(mcfn, d)
 
         mc = bb.runqueue.mc_from_tid(mcfn)
-        setattr(self.datacaches[mc], "siggen_varvals", {})
+        for attr in ["siggen_varvals", "siggen_taskdeps", "siggen_gendeps"]:
+            if not hasattr(self.datacaches[mc], attr):
+                setattr(self.datacaches[mc], attr, {})
         self.datacaches[mc].siggen_varvals[mcfn] = d.getVar("__siggen_varvals")
-        setattr(self.datacaches[mc], "siggen_taskdeps", {})
         self.datacaches[mc].siggen_taskdeps[mcfn] = d.getVar("__siggen_taskdeps")
-        setattr(self.datacaches[mc], "siggen_gendeps", {})
         self.datacaches[mc].siggen_gendeps[mcfn] = d.getVar("__siggen_gendeps")
 
     def rundep_check(self, fn, recipename, task, dep, depname, dataCaches):