Fixed memory leak crash

source/libublsettings-char.c

@@ -258,37 +258,30 @@ char *yon_char_from_int(int int_to_convert)
 
 char *yon_char_from_float(float int_to_convert)
 {
-    int i = 1;
-    float convert_check = (float)int_to_convert;
-    for (i = 1; convert_check >= 10; i++)
-    {
-        convert_check = convert_check / 10;
-    }
-    char *ch = malloc((i + 9)* sizeof(char)+ int_to_convert<0?1:0);
-    memset(ch,0,(i + 9)* sizeof(char));
+    int i = snprintf( NULL, 0, "%f", int_to_convert)+1;
+    
+    char *ch = malloc(i * sizeof(char));
+    memset(ch,0,i * sizeof(char));
     sprintf(ch, "%.2f", int_to_convert);
     return ch;
 }
 
 char *yon_char_from_double(double int_to_convert)
 {
-    int i = 1;
-    double convert_check = (double)int_to_convert;
-    for (i = 1; convert_check >= 10; i++)
-    {
-        convert_check = convert_check / 10;
-    }
-    char *ch = malloc((i + 9)* sizeof(char)+ int_to_convert<0?1:0);
-    memset(ch,0,(i + 9)* sizeof(char));
+    int i = snprintf( NULL, 0, "%f", int_to_convert)+1;
+    
+    char *ch = malloc(i * sizeof(char));
+    memset(ch,0,i * sizeof(char));
     sprintf(ch, "%.2f", int_to_convert);
     return ch;
 }
 
 char *yon_char_from_long(long int_to_convert)
 {
-    size_t size = 20 * sizeof(char) + 1 + int_to_convert<0?1:0;
-    char *ch = malloc(size);
-    memset(ch,0,size);
+    int i = snprintf( NULL, 0, "%ld", int_to_convert)+1;
+    
+    char *ch = malloc(i * sizeof(char));
+    memset(ch,0,i * sizeof(char));
     sprintf(ch, "%ld", int_to_convert);
     return ch;
 }