scan-build: Remove useless whitespace in File path

[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.

[zaks.anna]

LGTM

tools/scan-build/scan-build

           my $x = shift @fname;
           print OUT $x;
           if ($#fname >= 0) {
-            print OUT "<span class=\"W\"> </span>/";
+            print OUT "/";
           }
         }
       }