Add cwe-073 tag to KernelOpen query

CWE-073 is External Control of File Name or Path, which applies here.

Author: hmac

ql/src/queries/security/cwe-078/KernelOpen.ql

@@ -11,6 +11,7 @@
  *       security
  *       external/cwe/cwe-078
  *       external/cwe/cwe-088
+ *       external/cwe/cwe-073
  */
 
 import ruby