server: Initialize pe image struct padding to avoid Valgrind warning.

include/wine/server_protocol.h

@@ -844,6 +844,7 @@ typedef struct
     unsigned char  contains_code : 1;
     unsigned char  wine_builtin : 1;
     unsigned char  wine_fakedll : 1;
+    unsigned char  padding : 5;
     unsigned char  image_flags;
     unsigned int   loader_flags;
     unsigned int   header_size;
@@ -6506,7 +6507,7 @@ union generic_reply
 
 /* ### protocol_version begin ### */
 
-#define SERVER_PROTOCOL_VERSION 785
+#define SERVER_PROTOCOL_VERSION 786
 
 /* ### protocol_version end ### */
 

server/mapping.c

@@ -842,6 +842,7 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s
         return STATUS_INVALID_IMAGE_FORMAT;
     }
 
+    mapping->image.padding       = 0;
     mapping->image.map_addr      = get_fd_map_address( mapping->fd );
     mapping->image.image_charact = nt.FileHeader.Characteristics;
     mapping->image.machine       = nt.FileHeader.Machine;

server/protocol.def

@@ -860,6 +860,7 @@ typedef struct
     unsigned char  contains_code : 1;
     unsigned char  wine_builtin : 1;
     unsigned char  wine_fakedll : 1;
+    unsigned char  padding : 5;
     unsigned char  image_flags;
     unsigned int   loader_flags;
     unsigned int   header_size;