Fix trailing whitespace in gdbinit file.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/379133003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22296 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/gdbinit

@@ -21,7 +21,7 @@ Usage: jco pc
 end
 
 # Print JavaScript stack trace.
-define jst 
+define jst
 print v8::internal::Isolate::Current()->PrintStack(stdout)
 end
 document jst
@@ -30,4 +30,4 @@ Usage: jst
 end
 
 set disassembly-flavor intel
-set disable-randomization off 
+set disable-randomization off