Add missing std::map include

irep.h provides std::map if, and only if, NAMED_SUB_IS_FORWARD_LIST is
not set.

Also cleanup include guards (pushing them to be the outermost
preprocessor directives) and indentation of includes.

Author: tautschnig

src/memory-analyzer/gdb_api.h

@@ -7,6 +7,9 @@ Author: Malte Mues <[email protected]>
 
 \*******************************************************************/
 
+#ifndef CPROVER_MEMORY_ANALYZER_GDB_API_H
+#define CPROVER_MEMORY_ANALYZER_GDB_API_H
+
 /// \file
 /// Low-level interface to gdb
 ///
@@ -24,14 +27,13 @@ Author: Malte Mues <[email protected]>
     defined(__MACH__)
 // clang-format on
 
-#ifndef CPROVER_MEMORY_ANALYZER_GDB_API_H
-#define CPROVER_MEMORY_ANALYZER_GDB_API_H
-#include <unistd.h>
+#  include <unistd.h>
 
-#include <exception>
-#include <forward_list>
+#  include <exception>
+#  include <forward_list>
+#  include <map>
 
-#include <util/exception_utils.h>
+#  include <util/exception_utils.h>
 
 class gdb_apit
 {
@@ -103,5 +105,5 @@ class gdb_interaction_exceptiont : public cprover_exception_baset
   std::string reason;
 };
 
-#endif // CPROVER_MEMORY_ANALYZER_GDB_API_H
 #endif
+#endif // CPROVER_MEMORY_ANALYZER_GDB_API_H