tools/xen-cpuid: Support dash as a bitmap separator

Xapi chose to render its featureset bitmaps with dashes rather than colons as
a separator.  Have xen-cpuid support both forms, for convenience.

Fix a trivial style issue in the vicinity while here.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

tools/misc/xen-cpuid.c

@@ -607,9 +607,10 @@ int main(int argc, char **argv)
                 if ( i == nr_features )
                     break;
 
-                if ( *ptr == ':' )
+                if ( *ptr == ':' || *ptr == '-' )
                 {
-                    ptr++; continue;
+                    ptr++;
+                    continue;
                 }
                 break;
             }