meson: fix LLVM version detection when <= 3.4

3 digits versions in LLVM only started from 3.4.1 on.

Hence, even if you can perfectly build with an old LLVM (< 3.4.1) in
the system while not needing LLVM at all (auto), when passing through
the LLVM version detection code, meson will fail when accessing
"_llvm_version[2]" due to:

"Index 2 out of bounds of array of size 2."

v2: Properly compare LLVM version and set patch version to 0
    if < 3.4.1 (Eric).

v3: Improve the commit log explanation (Eric).

Cc: Dylan Baker <[email protected]>
Cc: Eric Engestrom <[email protected]>
Signed-off-by: Andres Gomez <[email protected]>
Reviewed-by: Dylan Baker <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Reviewed-by: Eric Engestrom <[email protected]>

0 files changed, 0 insertions, 0 deletions