One line fix for possible out-of-bounds issue in kmp_runtime.c
One line fix for possible out-of-bounds issue in kmp_runtime.c

The variable j is now checked so there is no possible
out-of-bounds issue when accessing __kmp_nested_nth.nth[] array.



git-svn-id: f99161ee8ccfe2101cbe1bdda2220bce2ed25485@238216 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp