Thread: pgsql: Clarify comment about assignment and reset of temp namespaceID

Clarify comment about assignment and reset of temp namespace ID in MyProc

The new wording comes from Álvaro, which I modified a bit.

Reported-by: Andres Freund, Álvaro Herrera
Author: Álvaro Herrera, Michael Paquier
Discussion: https://postgr.es/m/20180809165047.GK13638@paquier.xyz
Backpatch-through: 11

Branch
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REL_11_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/9fc9933695af4e233c2da704be4ad5c681cf7104

Modified Files
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src/backend/catalog/namespace.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)