Fix a lint warning

Summary: Might as well.

Reviewed By: blackm00n

Differential Revision: D58132750

fbshipit-source-id: 279940b2ff5e84790cef49f6923a2155b67454e4

toolchains/conan/conan_update.py

@@ -42,11 +42,11 @@ def write_targets(update_label, lock_generate, conan_generate, targets_out):
     with open(targets_out, "w") as outf:
         outf.write(header)
         with open(lock_generate, "r") as inf:
-            for l in inf:
-                outf.write(l)
+            for x in inf:
+                outf.write(x)
         with open(conan_generate, "r") as inf:
-            for l in inf:
-                outf.write(l)
+            for x in inf:
+                outf.write(x)
 
 
 def main():