[pushed 1/2] Fix test-cp-name-parser build, unused variable

[Pedro Alves <palves@redhat.com>]

  $ make test-cp-name-parser
  ...
  CXX    test-cp-name-parser.o
  src/gdb/cp-name-parser.y: In function ‘int gdb::main(int, char**)’:
  src/gdb/cp-name-parser.y:2137:6: error: unused variable ‘len’ [-Werror=unused-variable]
    int len;
	^~~
  cc1plus: all warnings being treated as errors

gdb/ChangeLog:
2019-03-12  Pedro Alves  <palves@redhat.com>

	* cp-name-parser.y (main): Remove unused 'len' variable.
---
 gdb/ChangeLog        | 4 ++++
 gdb/cp-name-parser.y | 1 -
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e6903f2281..44aa9a3b94 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2019-03-12  Pedro Alves  <palves@redhat.com>
+
+	* cp-name-parser.y (main): Remove unused 'len' variable.
+
 2019-03-12  Tom Tromey  <tromey@adacore.com>
 
 	* common/ptid.c (null_ptid, minus_one_ptid): Now const.
diff --git a/gdb/cp-name-parser.y b/gdb/cp-name-parser.y
index 284b1ff121..ec1721007f 100644
--- a/gdb/cp-name-parser.y
+++ b/gdb/cp-name-parser.y
@@ -2129,7 +2129,6 @@ main (int argc, char **argv)
   if (argv[arg] == NULL)
     while (fgets (buf, 65536, stdin) != NULL)
       {
-	int len;
 	buf[strlen (buf) - 1] = 0;
 	/* Use DMGL_VERBOSE to get expanded standard substitutions.  */
 	c = trim_chars (buf, &extra_chars);
-- 
2.14.4