Coverity analysis defect 72703: Redundant test

Test always evaluates the same

Defect 72703 (STATIC_C)
Checker DEADCODE (subcategory redundant_test)
File: /src/third_party/wiredtiger/src/conn/conn_api.c
Function __wt_encryptor_config
/src/third_party/wiredtiger/src/conn/conn_api.c, line: 465
At condition "locked", the value of "locked" must be equal to 1.

    	if (locked)

/src/third_party/wiredtiger/src/conn/conn_api.c, line: 417
Assigning: "locked" = "1".

    	locked = 1;

/src/third_party/wiredtiger/src/conn/conn_api.c, line: 465
The condition "locked" must be true.

    	if (locked)