glsl/glcpp: Rename one test to avoid a duplicate test number

With two tests both numbered 118, there was a confusing off-by-two difference
between the last test number and the total number of tests (as reported by
glcpp-test).

With this rename, there's only an off-by-one difference left, (which is easy
to understand given the zero-based test numbering).

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/glsl/glcpp/tests/118-multiple-else.c b/src/glsl/glcpp/tests/143-multiple-else.c
similarity index 100%
rename from src/glsl/glcpp/tests/118-multiple-else.c
rename to src/glsl/glcpp/tests/143-multiple-else.c

diff --git a/src/glsl/glcpp/tests/118-multiple-else.c.expected b/src/glsl/glcpp/tests/143-multiple-else.c.expected
similarity index 100%
rename from src/glsl/glcpp/tests/118-multiple-else.c.expected
rename to src/glsl/glcpp/tests/143-multiple-else.c.expected