Fix not validating values in EXPECT_NOTIFICATION with 1 occurence
Fix not validating values in EXPECT_NOTIFICATION with 1 occurence

table.pack() donesn't packs the only one argument in the number-indexed
array and returns only that one argument. So, 1st elements of args
returns nil. Assign of args itself solves issue of getting right
argument.

aderiabin/sdl_atf,aderiabin/sdl_atf,aderiabin/sdl_atf