DWARF: Skip zero column for inline call sites

DWARF: Skip zero column for inline call sites

D64033 <https://reviews.llvm.org/D64033> added DW_AT_call_column for
inline sites. However, that change wasn't aware of "-gno-column-info".
To avoid adding column info when "-gno-column-info" is used, now
DW_AT_call_column is only added when we have non-zero column (when
"-gno-column-info" is used, column will be zero).

Patch by Wenlei He!

Differential Revision: https://reviews.llvm.org/D64784

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@366264 91177308-0d34-0410-b5e6-96231b3b80d8