Bugzilla Bug 255633: allow hyphen (-) and underscore (_) in log module

names.  The patch is contributed by Ed Catmur <ed@catmur.co.uk>. r=wtc.

nsprpub/pr/src/io/prlog.c

@@ -219,7 +219,7 @@ void _PR_InitLog(void)
         PRInt32 bufSize = DEFAULT_BUF_SIZE;
         while (pos < evlen) {
             PRIntn level = 1, count = 0, delta = 0;
-            count = sscanf(&ev[pos], "%63[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789]%n:%d%n",
+            count = sscanf(&ev[pos], "%63[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_]%n:%d%n",
                            module, &delta, &level, &delta);
             pos += delta;
             if (count == 0) break;
@@ -328,7 +328,7 @@ static void _PR_SetLogModuleLevel( PRLogModuleInfo *lm )
         while (pos < evlen) {
             PRIntn level = 1, count = 0, delta = 0;
 
-            count = sscanf(&ev[pos], "%63[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789]%n:%d%n",
+            count = sscanf(&ev[pos], "%63[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_]%n:%d%n",
                            module, &delta, &level, &delta);
             pos += delta;
             if (count == 0) break;