Fixing check style.

Author: ppisl

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/zipimporter/ZipImporterBuiltins.java

@@ -168,6 +168,7 @@ public int read() throws IOException {
 
         void findFirstEntryPosition() throws IOException {
             while (positions.isEmpty() && read() != -1) {
+                // do nothing here, just read until the first LOC is found
             }
             pos -= 4;
             readFirstLoc = true;