Bazel: Add missing newlines at end of BUILD files

Change-Id: I11afc45141da988e28382898246995f6b45eb09c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

lib/jmh/BUILD

@@ -9,4 +9,4 @@ java_library(
         "@jopt//jar",
         "@math3//jar",
     ],
-)
+)

org.eclipse.jgit.benchmarks/BUILD

@@ -10,4 +10,4 @@ jmh_java_benchmarks(
     deps = [
         "//org.eclipse.jgit:jgit",
     ],
-)
+)