Some cleanup changes.

--
MOS_MIGRATED_REVID=87821306
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/GlobFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/GlobFunction.java
index a1fdcb2..d1ee81c 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/GlobFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/GlobFunction.java
@@ -74,7 +74,7 @@
 
     String pattern = glob.getPattern();
     // Split off the first path component of the pattern.
-    int slashPos = pattern.indexOf("/");
+    int slashPos = pattern.indexOf('/');
     String patternHead;
     String patternTail;
     if (slashPos == -1) {