Tools lint cleanup (#764)

* argdist: linter cleanup

* cpudist: linter cleanup

* execsnoop: linter cleanup

* funclatency: linter cleanup

* gethostlatency: linter cleanup

* hardirqs: linter cleanup

* memleak: linter cleanup

* mountsnoop: linter cleanup

* offcputime: linter cleanup

* softirqs: linter cleanup

* solisten: linter cleanup and u+x mode

* stacksnoop: linter cleanup

* tplist: linter cleanup

* trace: linter cleanup
diff --git a/tools/funclatency.py b/tools/funclatency.py
index 4e6407c..13c18de 100755
--- a/tools/funclatency.py
+++ b/tools/funclatency.py
@@ -9,8 +9,8 @@
 #
 # Run "funclatency -h" for full usage.
 #
-# The pattern is a string with optional '*' wildcards, similar to file globbing.
-# If you'd prefer to use regular expressions, use the -r option.
+# The pattern is a string with optional '*' wildcards, similar to file
+# globbing. If you'd prefer to use regular expressions, use the -r option.
 #
 # Currently nested or recursive functions are not supported properly, and
 # timestamps will be overwritten, creating dubious output. Try to match single
@@ -202,7 +202,8 @@
     matched = b.num_open_kprobes()
 else:
     b.attach_uprobe(name=library, sym_re=pattern, fn_name="trace_func_entry")
-    b.attach_uretprobe(name=library, sym_re=pattern, fn_name="trace_func_return")
+    b.attach_uretprobe(name=library, sym_re=pattern,
+                       fn_name="trace_func_return")
     matched = b.num_open_uprobes()
 
 if matched == 0: