Fix base_name of argc' symbol to match its name

Author: chrisr-diffblue

src/ansi-c/ansi_c_entry_point.cpp

@@ -237,7 +237,7 @@ bool generate_ansi_c_start_function(
     return_symbol.mode=ID_C;
     return_symbol.is_static_lifetime=false;
     return_symbol.name="return'";
-    return_symbol.base_name="return'";
+    return_symbol.base_name = "return'";
     return_symbol.type=to_code_type(symbol.type).return_type();
 
     symbol_table.add(return_symbol);
@@ -260,7 +260,7 @@ bool generate_ansi_c_start_function(
       {
         symbolt argc_symbol;
 
-        argc_symbol.base_name = "argc";
+        argc_symbol.base_name = "argc'";
         argc_symbol.name = "argc'";
         argc_symbol.type = signed_int_type();
         argc_symbol.is_static_lifetime = true;