vmodtool: fix first argument starting on new line

Fixes issue reported by @carlosabalde in #1976

lib/libvcc/vmodtool.py

@@ -288,7 +288,7 @@ class prototype(object):
 		s = s[i:].strip()
 		assert s[0] == "("
 		assert s[-1] == ")"
-		s = s[1:-1]
+		s = s[1:-1].lstrip()
 		self.args = []
 		while len(s) > 0:
 			a,s = arg(s)

lib/libvmod_debug/vmod.vcc

@@ -94,7 +94,8 @@ $Function VOID rot52(HTTP hdr)
 Encrypt the HTTP header with quad-ROT13 encryption,
 (this is approx 33% better than triple-DES).
 
-$Function STRING argtest(STRING one, REAL two=2, STRING three="3",
+$Function STRING argtest(
+	  STRING one, REAL two=2, STRING three="3",
 	  STRING comma=",", INT four=4)
 
 $Function INT vre_limit()