A unsigned int to size_t conversion.

LeaHeader.c

@@ -38,8 +38,8 @@ void markPrevInUse (char * ptr) {
 	getHeader(ptr)->prevSize |= 1;
 }
 
-unsigned int isPrevFree (char * ptr) {
-	unsigned int free = ~(getHeader(ptr)->prevSize & 1);
+size_t isPrevFree (char * ptr) {
+	size_t free = ~(getHeader(ptr)->prevSize & 1);
 	return (free & 1) ;
 }
 

LeaHeader.h

@@ -28,19 +28,15 @@ void setSize(void *ptr, size_t sz);
 
 void setPrevSize (void *ptr, size_t sz);
 
-
 void markPrevFree (char * ptr);
 
 void markPrevInUse (char * ptr);
 
-unsigned int isPrevFree (char * ptr);
-
+size_t isPrevFree (char * ptr);
 
 void markInUse (char * ptr);
 
-
 void markFree (char * ptr);
-	
 
 unsigned int isFree (char * ptr);