lib/raster: Fix Resource Leak issue in quant_io.c (OSGeo#5076)

Author: ShubhamDesai

lib/raster/quant_io.c

@@ -103,9 +103,11 @@ int Rast__quant_import(const char *name, const char *mapset,
     Rast_quant_free(quant);
 
     if (Rast_map_type(name, mapset) == CELL_TYPE) {
+        char *mname = G_fully_qualified_name(name, mapset);
         G_warning(_("Attempt to open quantization"
                     " table for CELL raster map <%s>"),
-                  G_fully_qualified_name(name, mapset));
+                  mname);
+        G_free(mname);
         return -2;
     }
 
@@ -133,8 +135,9 @@ int Rast__quant_import(const char *name, const char *mapset,
 
         /* int range doesn't exist anymore if (quant_load_range (quant, name,
          * mapset)>0) return 3; */
-        G_warning(_("Quantization file for raster map <%s> is missing"),
-                  G_fully_qualified_name(name, mapset));
+        char *mname = G_fully_qualified_name(name, mapset);
+        G_warning(_("Quantization file for raster map <%s> is missing"), mname);
+        G_free(mname);
     }
     else {
         parsStat = quant_parse_file(fd, quant);