Fix redundant redeclaration of Conn_Count*() functions

Fix redundant redeclaration of Conn_Count*() functions

The wrongly placed #endif lead to the following compiler warnings:

conn.h:125: warning: redundant redeclaration of ‘Conn_Count’
conn.h:125: warning: previous declaration of ‘Conn_Count’ was here
conn.h:126: warning: redundant redeclaration of ‘Conn_CountMax’
conn.h:126: warning: previous declaration of ‘Conn_CountMax’ was here
conn.h:127: warning: redundant redeclaration of ‘Conn_CountAccepted’
conn.h:127: warning: previous declaration of ‘Conn_CountAccepted’ was here