Fixing more errors coverity found.

Imagepaint make sure ibuf exists before we use it.  This is CID# 545
editmesh_tools.c make sure were not indexing array with -1 This is CID# 137
	(also removed some trailing whitespace I found)

anim5.c	totlen could be -1 so check its > -1  This is CID# 134

Kent

source/blender/imbuf/intern/anim5.c

@@ -425,7 +425,7 @@ int startanim5(struct anim * anim) {
 	/* de hele file wordt in het geheugen gemapped */
 
 	totlen = BLI_filesize(file);
-	if (totlen && file>=0) {
+	if (totlen>0 && file>=0) {
 		lseek(file, 0L, SEEK_SET);
 		
 		mem= MEM_mallocN(totlen, "mmap");

source/blender/src/editmesh_tools.c

@@ -2520,11 +2520,13 @@ void esubdivideflag(int flag, float rad, int beauty, int numcuts, int seltype)
 								}
 							}
 						}
-						sort[hold]->f &= ~SELECT;
-						sort[hold]->f2 |= EDGENEW;
-						length[hold] = -1;
-					}							
-				} 
+						if (hold > -1) {
+							sort[hold]->f &= ~SELECT;
+							sort[hold]->f2 |= EDGENEW;
+							length[hold] = -1;
+						}
+					}
+				}
 				
 				// Beauty Long Edges
 				else {
@@ -2541,13 +2543,15 @@ void esubdivideflag(int flag, float rad, int beauty, int numcuts, int seltype)
 								}
 							}
 						}
-						sort[hold]->f &= ~SELECT;
-						sort[hold]->f2 |= EDGENEW;
-						length[hold] = -1;
-					}							
-				}   
+						if (hold > -1) {
+							sort[hold]->f &= ~SELECT;
+							sort[hold]->f2 |= EDGENEW;
+							length[hold] = -1;
+						}
+					}
+				}
 			}
-		}	
+		}
 	}
 
 	gh = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp); 

source/blender/src/imagepaint.c

@@ -708,8 +708,7 @@ static int project_paint_PickColor(const ProjPaintState *ps, float pt[2], float
 	}
 	
 	ibuf = BKE_image_get_ibuf((Image *)tf->tpage, NULL); /* TODO - this may be slow, the only way around it is to have an ibuf index per face */
-	
-
+	if (!ibuf) return 0;
 	
 	if (interp) {
 		float x, y;