Uninitialized variable compiler warnings on Linux

lib/layout/layimage.c

@@ -2908,7 +2908,7 @@ lo_ImageObserver(XP_Observable observable, XP_ObservableMsg message,
 {
     IL_MessageData *data = (IL_MessageData*)message_data;
     lo_ImageObsClosure *image_obs_closure = (lo_ImageObsClosure *)closure;
-    MWContext *context;
+    MWContext *context=NULL;
     LO_ImageStruct *lo_image;
 #ifdef MOCHA
     LM_ImageEvent mocha_event;
@@ -3072,7 +3072,7 @@ MODULE_PRIVATE int PR_CALLBACK lo_AutoloadPrefChangedFunc(const char *pref,
 MODULE_PRIVATE int PR_CALLBACK lo_AutoloadPrefChangedFunc(const char *pref,
                                                           void *data) 
 {
-	int status;
+	int status=0;
 
 	if (!XP_STRCASECMP(pref,"general.always_load_images")) 
 		status = PREF_GetBoolPref("general.always_load_images",
@@ -3112,7 +3112,7 @@ void lo_GetImage(MWContext *context, IL_GroupContext *img_cx,
     NET_ReloadMethod reload_method;
     IL_NetContext *net_cx = NULL;
     IL_IRGB *trans_pixel;
-    char *image_url, *lowres_image_url, *url_to_fetch;
+    char *image_url, *lowres_image_url=NULL, *url_to_fetch;
 	IL_ImageReq *dummy_ireq;
 
     /* Safety checks. */

lib/layout/layout.c

@@ -974,7 +974,7 @@ lo_calc_push_right_for_justify(lo_DocState *state, int32 *remainder)
 	int32 count = -1;  /* start at -1 */
 	int32 push_right;
 	LO_Element *tptr;
-	LO_Element *last;
+	LO_Element *last=NULL;
 
 	tptr = state->line_list;
 
@@ -2145,7 +2145,7 @@ lo_BlockTag(MWContext *context, lo_DocState *state, PA_Tag *tag)
 	int32 doc_id;
 	lo_TopState *top_state;
 	lo_DocState *new_state;
-	char *save_base;
+	char *save_base=NULL;
 
 	/*
 	 * All blocked tags should be at the top level of state
@@ -6564,7 +6564,7 @@ LO_DiscardDocument(MWContext *context)
 	LO_Element *recycle_list;
 	int32 cnt;
 #ifdef MEMORY_ARENAS
-	lo_arena *old_arena;
+	lo_arena *old_arena=NULL;
 #endif /* MEMORY_ARENAS */
 
 	/*

lib/layout/laytags.c

@@ -5346,11 +5346,11 @@ XP_TRACE(("lo_LayoutTag(%d)\n", tag->type));
 				LO_TextAttr *attr;
 				PA_Block buff;
 				intn new_size;
-				uint16 new_point_size;
-				uint16 new_font_weight;
+				uint16 new_point_size=0;
+				uint16 new_font_weight=0;
 				char *size_str;
 				char *str;
-				char *new_face;
+				char *new_face=NULL;
 				Bool has_face;
 				Bool has_size;
 				Bool has_point_size;
@@ -6828,7 +6828,7 @@ XP_TRACE(("lo_LayoutTag(%d)\n", tag->type));
 					}
 					else if (!strcasecomp((char *)buff, "prefetch"))
 					{
-						char *prefetchURL;
+						char *prefetchURL=NULL;
 						char *str;
 						PA_Block buff2 = lo_FetchParamValue(context, tag, PARAM_SRC);
 
@@ -6852,7 +6852,7 @@ XP_TRACE(("lo_LayoutTag(%d)\n", tag->type));
 
 					else if (!strcasecomp((char *)buff, "privacypolicy"))
 					{
-						char *policyURL;
+						char *policyURL=NULL;
 						char *str;
 						PA_Block buff2 = lo_FetchParamValue(context, tag, PARAM_SRC);
 						History_entry *hist;

lib/layout/laytext.c

@@ -7252,7 +7252,7 @@ lo_GetNextTextPosition ( LO_TextBlock * block, uint32 * outWordLength, uint32 *
 	uint32		lineLength;
 	uint32		nibbleCount;
 	uint32		dataNibbles;
-	int32		wordLength;
+	int32		wordLength=0;
 	uint32 *	breakTable;
 	uint8 *		endTextRun;
 	
@@ -7877,7 +7877,7 @@ void lo_BreakOldTextBlockElement(MWContext *context, lo_DocState *state)
 	int32			old_baseline;
 	int32			old_line_height;
 	int32			adjust;
-	int32			baseline_inc;
+	int32			baseline_inc=0;
 	LO_Element *	tptr;
 	LO_Element *	eptr;
 	LO_Element *	line_ptr;