Libraries: fixed a bug in lib_init functions (#274)

added verification of the second initialization attempt

Reviewed-on: #274

programs/develop/libraries/http/http.asm

@@ -100,6 +100,10 @@ lib_init: ;//////////////////////////////////////////////////////////////////;;
         mov     [mem.alloc], eax
         mov     [mem.free], ebx
         mov     [mem.realloc], ecx
+
+        cmp     [dll.load], edx
+        je      .ok
+
         mov     [dll.load], edx
 
         invoke  dll.load, @IMPORT
@@ -115,6 +119,7 @@ lib_init: ;//////////////////////////////////////////////////////////////////;;
         invoke  ini.get_str, inifile, sec_proxy, key_password, proxyPassword, 256, proxyPassword
         popa
 
+  .ok:
         DEBUGF  1, "HTTP library: init OK\n"
         xor     eax, eax
         ret

programs/develop/libraries/libs-dev/libimg/libimg.asm

@@ -78,6 +78,10 @@ proc lib_init ;///////////////////////////////////////////////////////////////;;
         mov     [mem.alloc], eax
         mov     [mem.free], ebx
         mov     [mem.realloc], ecx
+
+        cmp     [dll.load], edx
+        je      .ok
+
         mov     [dll.load], edx
 
         or      edx, edx

programs/develop/libraries/libs-dev/libini/libini_p.asm

@@ -37,6 +37,10 @@ proc libini._.init ;////////////////////////////////////////////////////////////
         mov     [mem.alloc], eax
         mov     [mem.free], ebx
         mov     [mem.realloc], ecx
+
+        cmp     [dll.load], edx
+        je      .ok
+
         mov     [dll.load], edx
 
         invoke  dll.load, @IMPORT

programs/develop/libraries/proc_lib/trunk/proc_lib.asm

@@ -33,7 +33,8 @@ use_ColorDialog
 ;--------------------------------------------------
 align 16
 lib_init:
-ret
+        xor     eax, eax
+        ret
 
 ;--------------------------------------------------
 align 16