scan-build: Remove useless whitespace in File path

Patch by Honggyu Kim

Summary:
This patch removes useless whitespace in File path in index.html
Previously, a File directory path is copied and pasted as below:
  arch /arm /kernel /stacktrace.c

It just removes the whitespace between directories and makes the
copied string as below:
  arch/arm/kernel/stacktrace.c

The output looks same in html format, but the copied directory path
can be pasted as it looks.

Reviewers: krememek, zaks.anna, sylvestre.ledru

Reviewed By: sylvestre.ledru

Subscribers: aemerson, cfe-commits

Differential Revision: http://reviews.llvm.org/D10354

llvm-svn: 239609