fix #86 - gdb commnader, cmain argc value is wrong when "queryArguments" is not checked

CHANGELOG.md

@@ -8,6 +8,10 @@
 - GDB commander: add an option allowing to set the path to the gdb binary. (#73)
 - Search results: use GNU style messages. (#84)
 
+## Bugs fixed
+
+- GDB comm&nder: 5 empty arguments were passed to the main function called by libc. (#86)
+
 # v3.9.11
 
 ## Regressions fixed

src/u_gdb.pas

@@ -2065,6 +2065,7 @@ begin
   end;
   if DirectoryExists(fSyms.expand(o.workingDirectory)) then
     gdbCommand('-environment-cd ' + fSyms.expand(o.workingDirectory));
+  str := ' ';
   if not o.arguments.Count.equals(0) or o.queryArguments then
   begin
     str := '';