pidgin/pidgin

Fix some issues scanbuild found

22 months ago, Gary Kramlich
ba5964adbf7f
Fix some issues scanbuild found

Testing Done:
ran `ninja scan-build` and verified the issues were resolved.

Reviewed at https://reviews.imfreedom.org/r/1585/
Title: Conversation Signals
Slug: conversation-signals
## Conversation signals
### displaying-im-msg
```c
gboolean
user_function(PurpleAccount *account,
const gchar *who,
gchar **message,
PurpleConversation *conv,
PurpleMessageFlags flags,
gpointer user_data);
```
Emitted just before a message is displayed in an IM conversation. `message` is
a pointer to a string, so the plugin can replace the message that will be
displayed. This can also be used to cancel displaying a message by returning
`TRUE`.
> **NOTE:** Make sure to free `*message` before you replace it!
**Parameters:**
**account**
: The account.
**who**
: The name of the user.
**message**
: A pointer to the message.
**conv**
: The conversation.
**flags**
: Flags for this message.
**user_data**
: User data set when the signal handler was connected.
**Returns:**
`TRUE` if the message should be canceled, or `FALSE` otherwise.
## displayed-im-msg
```c
void
user_function(PurpleAccount *account,
const gchar *who,
gchar *message,
PurpleConversation *conv,
PurpleMessageFlags flags,
gpointer user_data);
```
Emitted after a message is displayed in an IM conversation.
**Parameters:**
**account**
: The account.
**who**
: The name of the user.
**message**
: The message.
**conv**
: The conversation.
**flags**
: Flags for this message.
**user_data**
: User data set when the signal handler was connected.
### displaying-chat-msg
```c
gboolean
user_function(PurpleAccount *account,
const gchar *who,
gchar **message,
PurpleConversation *conv,
PurpleMessageFlags flags,
gpointer user_data);
```
Emitted just before a message is displayed in a chat. `message` is a pointer to
a string, so the plugin can replace the message that will be displayed. This
can also be used to cancel displaying a message by returning `TRUE`.
> **NOTE:** Make sure to free `*message` before you replace it!
**Parameters:**
**account**
: The account the message is being displayed and sent on.
**who**
: The name of the user.
**message**
: A pointer to the message that will be displayed and sent.
**conv**
: The conversation the message is being displayed and sent on.
**flags**
: Flags for this message.
**user_data**
: User data set when the signal handler was connected.
**Returns:**
`TRUE` if the message should be canceled, or `FALSE` otherwise.
### displayed-chat-msg
```c
void
user_function(PurpleAccount *account,
const gchar *who,
gchar *message,
PurpleConversation *conv,
PurpleMessageFlags flags,
gpointer user_data);
```
Emitted after a message is displayed in a chat conversation.
**Parameters:**
**account**
: The account the message is being displayed and sent on.
**who**
: The name of the user.
**message**
: A pointer to the message that will be displayed and sent.
**conv**
: The conversation the message is being displayed and sent on.
**flags**
: Flags for this message.
**user_data**
: User data set when the signal handler was connected.
### conversation-switched
```c
void user_function(PurpleConversation *conv, gpointer user_data);
```
Emitted when a window switched from one conversation to another.
**Parameters:**
**new_conv**
: The now active conversation.
**user_data**
: User data set when the signal handler was connected.
### conversation-displayed
```c
void user_function(PidginConversation *gtkconv, gpointer user_data);
```
Emitted right after the Pidgin UI is attached to a new conversation.
**Parameters:**
**gtkconv**
: The PidginConversation.
**user_data**
: User data set when the signal handler was connected.