Bug 970123 follow-up: convert the tabs injected into the file into spaces, DONTBUILD

toolkit/library/dependentlibs.py

@@ -103,10 +103,10 @@ def dependentlibs(lib, libpaths, func):
             deppath = os.path.join(dir, dep)
             if os.path.exists(deppath):
                 deps.extend([d for d in dependentlibs(deppath, libpaths, func) if not d in deps])
-		# Black list the ICU data DLL because preloading it at startup
-		# leads to startup performance problems because of its excessive
-		# size (around 10MB).
-		if not dep.startswith("icudt"):
+                # Black list the ICU data DLL because preloading it at startup
+                # leads to startup performance problems because of its excessive
+                # size (around 10MB).
+                if not dep.startswith("icudt"):
                     deps.append(dep)
                 break