remove unnecessary explicit type conversion (to char) for appendStringInfoChar function calls

[Mahendra Singh Thalor]

Hi,
In the current master code, 3 places we are using appendStringInfoChar
call with explicit type conversion into char. This is not needed as
all other places, we are using direct character to append.

--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -302,7 +302,7 @@ InteractiveBackend(StringInfo inBuf)
         */

        /* Add '\0' to make it look the same as message case. */
-       appendStringInfoChar(inBuf, (char) '\0');
+       appendStringInfoChar(inBuf, '\0');

Here, I am attaching a small patch to fix these 3 type conversions on head.

-- 
Thanks and Regards
Mahendra Singh Thalor
EnterpriseDB: http://www.enterprisedb.com

v01_remove-unnecessary-type-conversion-into-char-for-appendStringInfoChar.patch
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