Whitespace correction to avoid compile warning

Introduced 2f63e2e2

Compiler error was:

sql/log_event.cc: In function ‘size_t log_event_print_value(IO_CACHE*, const uchar*, uint, uint, char*, size_t)’:
sql/log_event.cc:2897:7: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
       if (!ptr)
       ^~
sql/log_event.cc:2900:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
         int32 i32= uint2korr(ptr);
         ^~~~~

Added in 950abd52

Error was:

sql/item_sum.cc:3478:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
     if ((!args[i]->fixed &&
     ^~
/sql/item_sum.cc:3482:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
       with_subselect|= args[i]->with_subselect;
       ^~~~~~~~~~~~~~
Signed-off-by: Daniel Black <daniel.black@au.ibm.com>